79890620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 171859968

約数和(自身を除く): 91969348

約数列:

[1, 2, 4, 5, 10, 20, 71, 127, 142, 254, 284, 355, 443, 508, 635, 710, 886, 1270, 1420, 1772, 2215, 2540, 4430, 8860, 9017, 18034, 31453, 36068, 45085, 56261, 62906, 90170, 112522, 125812, 157265, 180340, 225044, 281305, 314530, 562610, 629060, 1125220, 3994531, 7989062, 15978124, 19972655, 39945310, 79890620]

約数ペア:

[(1, 79890620), (2, 39945310), (4, 19972655), (5, 15978124), (10, 7989062), (20, 3994531), (71, 1125220), (127, 629060), (142, 562610), (254, 314530), (284, 281305), (355, 225044), (443, 180340), (508, 157265), (635, 125812), (710, 112522), (886, 90170), (1270, 62906), (1420, 56261), (1772, 45085), (2215, 36068), (2540, 31453), (4430, 18034), (8860, 9017)]