21569940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 288

約数和(自身を含む): 84913920

約数和(自身を除く): 63343980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 19, 20, 21, 28, 30, 34, 35, 36, 38, 42, 45, 51, 53, 57, 60, 63, 68, 70, 76, 84, 85, 90, 95, 102, 105, 106, 114, 119, 126, 133, 140, 153, 159, 170, 171, 180, 190, 204, 210, 212, 228, 238, 252, 255, 265, 266, 285, 306, 315, 318, 323, 340, 342, 357, 371, 380, 399, 420, 476, 477, 510, 530, 532, 570, 595, 612, 630, 636, 646, 665, 684, 714, 742, 765, 795, 798, 855, 901, 954, 969, 1007, 1020, 1060, 1071, 1113, 1140, 1190, 1197, 1260, 1292, 1330, 1428, 1484, 1530, 1590, 1596, 1615, 1710, 1785, 1802, 1855, 1908, 1938, 1995, 2014, 2142, 2226, 2261, 2380, 2385, 2394, 2660, 2703, 2907, 3021, 3060, 3180, 3230, 3339, 3420, 3570, 3604, 3710, 3876, 3990, 4028, 4284, 4452, 4505, 4522, 4770, 4788, 4845, 5035, 5355, 5406, 5565, 5814, 5985, 6042, 6307, 6460, 6678, 6783, 7049, 7140, 7420, 7980, 8109, 9010, 9044, 9063, 9540, 9690, 10070, 10710, 10812, 11130, 11305, 11628, 11970, 12084, 12614, 13356, 13515, 13566, 14098, 14535, 15105, 16218, 16695, 17119, 18020, 18126, 18921, 19380, 20140, 20349, 21147, 21420, 22260, 22610, 23940, 25228, 27030, 27132, 28196, 29070, 30210, 31535, 32436, 33390, 33915, 34238, 35245, 36252, 37842, 40545, 40698, 42294, 45220, 45315, 51357, 54060, 56763, 58140, 60420, 63070, 63441, 66780, 67830, 68476, 70490, 75684, 81090, 81396, 84588, 85595, 90630, 94605, 101745, 102714, 105735, 113526, 119833, 126140, 126882, 135660, 140980, 154071, 162180, 171190, 181260, 189210, 203490, 205428, 211470, 227052, 239666, 253764, 256785, 283815, 308142, 317205, 342380, 359499, 378420, 406980, 422940, 479332, 513570, 567630, 599165, 616284, 634410, 718998, 770355, 1027140, 1078497, 1135260, 1198330, 1268820, 1437996, 1540710, 1797495, 2156994, 2396660, 3081420, 3594990, 4313988, 5392485, 7189980, 10784970, 21569940]

約数ペア:

[(1, 21569940), (2, 10784970), (3, 7189980), (4, 5392485), (5, 4313988), (6, 3594990), (7, 3081420), (9, 2396660), (10, 2156994), (12, 1797495), (14, 1540710), (15, 1437996), (17, 1268820), (18, 1198330), (19, 1135260), (20, 1078497), (21, 1027140), (28, 770355), (30, 718998), (34, 634410), (35, 616284), (36, 599165), (38, 567630), (42, 513570), (45, 479332), (51, 422940), (53, 406980), (57, 378420), (60, 359499), (63, 342380), (68, 317205), (70, 308142), (76, 283815), (84, 256785), (85, 253764), (90, 239666), (95, 227052), (102, 211470), (105, 205428), (106, 203490), (114, 189210), (119, 181260), (126, 171190), (133, 162180), (140, 154071), (153, 140980), (159, 135660), (170, 126882), (171, 126140), (180, 119833), (190, 113526), (204, 105735), (210, 102714), (212, 101745), (228, 94605), (238, 90630), (252, 85595), (255, 84588), (265, 81396), (266, 81090), (285, 75684), (306, 70490), (315, 68476), (318, 67830), (323, 66780), (340, 63441), (342, 63070), (357, 60420), (371, 58140), (380, 56763), (399, 54060), (420, 51357), (476, 45315), (477, 45220), (510, 42294), (530, 40698), (532, 40545), (570, 37842), (595, 36252), (612, 35245), (630, 34238), (636, 33915), (646, 33390), (665, 32436), (684, 31535), (714, 30210), (742, 29070), (765, 28196), (795, 27132), (798, 27030), (855, 25228), (901, 23940), (954, 22610), (969, 22260), (1007, 21420), (1020, 21147), (1060, 20349), (1071, 20140), (1113, 19380), (1140, 18921), (1190, 18126), (1197, 18020), (1260, 17119), (1292, 16695), (1330, 16218), (1428, 15105), (1484, 14535), (1530, 14098), (1590, 13566), (1596, 13515), (1615, 13356), (1710, 12614), (1785, 12084), (1802, 11970), (1855, 11628), (1908, 11305), (1938, 11130), (1995, 10812), (2014, 10710), (2142, 10070), (2226, 9690), (2261, 9540), (2380, 9063), (2385, 9044), (2394, 9010), (2660, 8109), (2703, 7980), (2907, 7420), (3021, 7140), (3060, 7049), (3180, 6783), (3230, 6678), (3339, 6460), (3420, 6307), (3570, 6042), (3604, 5985), (3710, 5814), (3876, 5565), (3990, 5406), (4028, 5355), (4284, 5035), (4452, 4845), (4505, 4788), (4522, 4770)]