21316445680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1\times {\mathrm{22679}}^1$

素因数の和:23102

約数の個数: 80

約数和(自身を含む): 51296716800

約数和(自身を除く): 29980271120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 379, 496, 620, 758, 1240, 1516, 1895, 2480, 3032, 3790, 6064, 7580, 11749, 15160, 22679, 23498, 30320, 45358, 46996, 58745, 90716, 93992, 113395, 117490, 181432, 187984, 226790, 234980, 362864, 453580, 469960, 703049, 907160, 939920, 1406098, 1814320, 2812196, 3515245, 5624392, 7030490, 8595341, 11248784, 14060980, 17190682, 28121960, 34381364, 42976705, 56243920, 68762728, 85953410, 137525456, 171906820, 266455571, 343813640, 532911142, 687627280, 1065822284, 1332277855, 2131644568, 2664555710, 4263289136, 5329111420, 10658222840, 21316445680]

約数ペア:

[(1, 21316445680), (2, 10658222840), (4, 5329111420), (5, 4263289136), (8, 2664555710), (10, 2131644568), (16, 1332277855), (20, 1065822284), (31, 687627280), (40, 532911142), (62, 343813640), (80, 266455571), (124, 171906820), (155, 137525456), (248, 85953410), (310, 68762728), (379, 56243920), (496, 42976705), (620, 34381364), (758, 28121960), (1240, 17190682), (1516, 14060980), (1895, 11248784), (2480, 8595341), (3032, 7030490), (3790, 5624392), (6064, 3515245), (7580, 2812196), (11749, 1814320), (15160, 1406098), (22679, 939920), (23498, 907160), (30320, 703049), (45358, 469960), (46996, 453580), (58745, 362864), (90716, 234980), (93992, 226790), (113395, 187984), (117490, 181432)]