20128185920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2029051}}^1$

素因数の和:2029099

約数の個数: 56

約数和(自身を含む): 49476403968

約数和(自身を除く): 29348218048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 2029051, 4058102, 8116204, 10145255, 16232408, 20290510, 32464816, 40581020, 62900581, 64929632, 81162040, 125801162, 129859264, 162324080, 251602324, 314502905, 324648160, 503204648, 629005810, 649296320, 1006409296, 1258011620, 2012818592, 2516023240, 4025637184, 5032046480, 10064092960, 20128185920]

約数ペア:

[(1, 20128185920), (2, 10064092960), (4, 5032046480), (5, 4025637184), (8, 2516023240), (10, 2012818592), (16, 1258011620), (20, 1006409296), (31, 649296320), (32, 629005810), (40, 503204648), (62, 324648160), (64, 314502905), (80, 251602324), (124, 162324080), (155, 129859264), (160, 125801162), (248, 81162040), (310, 64929632), (320, 62900581), (496, 40581020), (620, 32464816), (992, 20290510), (1240, 16232408), (1984, 10145255), (2480, 8116204), (4960, 4058102), (9920, 2029051)]