1821517840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:166

約数の個数: 240

約数和(自身を含む): 4876027200

約数和(自身を除く): 3054509360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 31, 38, 40, 43, 58, 62, 76, 80, 86, 95, 116, 124, 145, 152, 155, 172, 190, 215, 232, 248, 290, 304, 310, 344, 380, 430, 464, 496, 551, 580, 589, 620, 688, 760, 817, 860, 899, 961, 1102, 1160, 1178, 1240, 1247, 1333, 1520, 1634, 1720, 1798, 1922, 2204, 2320, 2356, 2480, 2494, 2666, 2755, 2945, 3268, 3440, 3596, 3844, 4085, 4408, 4495, 4712, 4805, 4988, 5332, 5510, 5890, 6235, 6536, 6665, 7192, 7688, 8170, 8816, 8990, 9424, 9610, 9976, 10664, 11020, 11780, 12470, 13072, 13330, 14384, 15376, 16340, 17081, 17980, 18259, 19220, 19952, 21328, 22040, 23560, 23693, 24940, 25327, 26660, 27869, 32680, 34162, 35960, 36518, 38440, 38657, 41323, 44080, 47120, 47386, 49880, 50654, 53320, 55738, 65360, 68324, 71920, 73036, 76880, 77314, 82646, 85405, 91295, 94772, 99760, 101308, 106640, 111476, 118465, 126635, 136648, 139345, 146072, 154628, 165292, 170810, 182590, 189544, 193285, 202616, 206615, 222952, 236930, 253270, 273296, 278690, 292144, 309256, 330584, 341620, 365180, 379088, 386570, 405232, 413230, 445904, 473860, 506540, 529511, 557380, 618512, 661168, 683240, 730360, 734483, 773140, 785137, 826460, 947720, 1013080, 1059022, 1114760, 1198367, 1366480, 1460720, 1468966, 1546280, 1570274, 1652920, 1895440, 2026160, 2118044, 2229520, 2396734, 2647555, 2937932, 3092560, 3140548, 3305840, 3672415, 3925685, 4236088, 4793468, 5295110, 5875864, 5991835, 6281096, 7344830, 7851370, 8472176, 9586936, 10590220, 11751728, 11983670, 12562192, 14689660, 15702740, 19173872, 21180440, 22768973, 23967340, 29379320, 31405480, 42360880, 45537946, 47934680, 58758640, 62810960, 91075892, 95869360, 113844865, 182151784, 227689730, 364303568, 455379460, 910758920, 1821517840]

約数ペア:

[(1, 1821517840), (2, 910758920), (4, 455379460), (5, 364303568), (8, 227689730), (10, 182151784), (16, 113844865), (19, 95869360), (20, 91075892), (29, 62810960), (31, 58758640), (38, 47934680), (40, 45537946), (43, 42360880), (58, 31405480), (62, 29379320), (76, 23967340), (80, 22768973), (86, 21180440), (95, 19173872), (116, 15702740), (124, 14689660), (145, 12562192), (152, 11983670), (155, 11751728), (172, 10590220), (190, 9586936), (215, 8472176), (232, 7851370), (248, 7344830), (290, 6281096), (304, 5991835), (310, 5875864), (344, 5295110), (380, 4793468), (430, 4236088), (464, 3925685), (496, 3672415), (551, 3305840), (580, 3140548), (589, 3092560), (620, 2937932), (688, 2647555), (760, 2396734), (817, 2229520), (860, 2118044), (899, 2026160), (961, 1895440), (1102, 1652920), (1160, 1570274), (1178, 1546280), (1240, 1468966), (1247, 1460720), (1333, 1366480), (1520, 1198367), (1634, 1114760), (1720, 1059022), (1798, 1013080), (1922, 947720), (2204, 826460), (2320, 785137), (2356, 773140), (2480, 734483), (2494, 730360), (2666, 683240), (2755, 661168), (2945, 618512), (3268, 557380), (3440, 529511), (3596, 506540), (3844, 473860), (4085, 445904), (4408, 413230), (4495, 405232), (4712, 386570), (4805, 379088), (4988, 365180), (5332, 341620), (5510, 330584), (5890, 309256), (6235, 292144), (6536, 278690), (6665, 273296), (7192, 253270), (7688, 236930), (8170, 222952), (8816, 206615), (8990, 202616), (9424, 193285), (9610, 189544), (9976, 182590), (10664, 170810), (11020, 165292), (11780, 154628), (12470, 146072), (13072, 139345), (13330, 136648), (14384, 126635), (15376, 118465), (16340, 111476), (17081, 106640), (17980, 101308), (18259, 99760), (19220, 94772), (19952, 91295), (21328, 85405), (22040, 82646), (23560, 77314), (23693, 76880), (24940, 73036), (25327, 71920), (26660, 68324), (27869, 65360), (32680, 55738), (34162, 53320), (35960, 50654), (36518, 49880), (38440, 47386), (38657, 47120), (41323, 44080)]