81821981560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{3391}}^1$

素因数の和:3534

約数の個数: 256

約数和(自身を含む): 218043187200

約数和(自身を除く): 136221205640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 55, 58, 61, 62, 88, 110, 116, 122, 124, 145, 155, 220, 232, 244, 248, 290, 305, 310, 319, 341, 440, 488, 580, 610, 620, 638, 671, 682, 899, 1160, 1220, 1240, 1276, 1342, 1364, 1595, 1705, 1769, 1798, 1891, 2440, 2552, 2684, 2728, 3190, 3355, 3391, 3410, 3538, 3596, 3782, 4495, 5368, 6380, 6710, 6782, 6820, 7076, 7192, 7564, 8845, 8990, 9455, 9889, 12760, 13420, 13564, 13640, 14152, 15128, 16955, 17690, 17980, 18910, 19459, 19778, 20801, 26840, 27128, 33910, 35380, 35960, 37301, 37820, 38918, 39556, 41602, 49445, 54839, 67820, 70760, 74602, 75640, 77836, 79112, 83204, 97295, 98339, 98890, 104005, 105121, 109678, 135640, 149204, 155672, 166408, 186505, 194590, 196678, 197780, 206851, 208010, 210242, 219356, 274195, 298408, 373010, 389180, 393356, 395560, 413702, 416020, 420484, 438712, 491695, 525605, 548390, 603229, 746020, 778360, 786712, 827404, 832040, 840968, 983390, 1034255, 1051210, 1081729, 1096780, 1156331, 1206458, 1492040, 1654808, 1966780, 2068510, 2102420, 2163458, 2193560, 2275361, 2312662, 2412916, 3016145, 3048509, 3933560, 4137020, 4204840, 4326916, 4550722, 4625324, 4825832, 5408645, 5781655, 5998679, 6032290, 6097018, 6412381, 8274040, 8653832, 9101444, 9250648, 10817290, 11376805, 11563310, 11997358, 12064580, 12194036, 12824762, 15242545, 18202888, 21634580, 22753610, 23126620, 23994716, 24129160, 24388072, 25649524, 29993395, 30485090, 32061905, 33533599, 43269160, 45507220, 46253240, 47989432, 51299048, 59986790, 60970180, 64123810, 65985469, 67067198, 70536191, 91014440, 119973580, 121940360, 128247620, 131970938, 134134396, 141072382, 167667995, 185959049, 239947160, 256495240, 263941876, 268268792, 282144764, 329927345, 335335990, 352680955, 371918098, 527883752, 564289528, 659854690, 670671980, 705361910, 743836196, 929795245, 1319709380, 1341343960, 1410723820, 1487672392, 1859590490, 2045549539, 2639418760, 2821447640, 3719180980, 4091099078, 7438361960, 8182198156, 10227747695, 16364396312, 20455495390, 40910990780, 81821981560]

約数ペア:

[(1, 81821981560), (2, 40910990780), (4, 20455495390), (5, 16364396312), (8, 10227747695), (10, 8182198156), (11, 7438361960), (20, 4091099078), (22, 3719180980), (29, 2821447640), (31, 2639418760), (40, 2045549539), (44, 1859590490), (55, 1487672392), (58, 1410723820), (61, 1341343960), (62, 1319709380), (88, 929795245), (110, 743836196), (116, 705361910), (122, 670671980), (124, 659854690), (145, 564289528), (155, 527883752), (220, 371918098), (232, 352680955), (244, 335335990), (248, 329927345), (290, 282144764), (305, 268268792), (310, 263941876), (319, 256495240), (341, 239947160), (440, 185959049), (488, 167667995), (580, 141072382), (610, 134134396), (620, 131970938), (638, 128247620), (671, 121940360), (682, 119973580), (899, 91014440), (1160, 70536191), (1220, 67067198), (1240, 65985469), (1276, 64123810), (1342, 60970180), (1364, 59986790), (1595, 51299048), (1705, 47989432), (1769, 46253240), (1798, 45507220), (1891, 43269160), (2440, 33533599), (2552, 32061905), (2684, 30485090), (2728, 29993395), (3190, 25649524), (3355, 24388072), (3391, 24129160), (3410, 23994716), (3538, 23126620), (3596, 22753610), (3782, 21634580), (4495, 18202888), (5368, 15242545), (6380, 12824762), (6710, 12194036), (6782, 12064580), (6820, 11997358), (7076, 11563310), (7192, 11376805), (7564, 10817290), (8845, 9250648), (8990, 9101444), (9455, 8653832), (9889, 8274040), (12760, 6412381), (13420, 6097018), (13564, 6032290), (13640, 5998679), (14152, 5781655), (15128, 5408645), (16955, 4825832), (17690, 4625324), (17980, 4550722), (18910, 4326916), (19459, 4204840), (19778, 4137020), (20801, 3933560), (26840, 3048509), (27128, 3016145), (33910, 2412916), (35380, 2312662), (35960, 2275361), (37301, 2193560), (37820, 2163458), (38918, 2102420), (39556, 2068510), (41602, 1966780), (49445, 1654808), (54839, 1492040), (67820, 1206458), (70760, 1156331), (74602, 1096780), (75640, 1081729), (77836, 1051210), (79112, 1034255), (83204, 983390), (97295, 840968), (98339, 832040), (98890, 827404), (104005, 786712), (105121, 778360), (109678, 746020), (135640, 603229), (149204, 548390), (155672, 525605), (166408, 491695), (186505, 438712), (194590, 420484), (196678, 416020), (197780, 413702), (206851, 395560), (208010, 393356), (210242, 389180), (219356, 373010), (274195, 298408)]