20512995820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2333}}^1\times {\mathrm{7207}}^1$

素因数の和:9610

約数の個数: 48

約数和(自身を含む): 43808321088

約数和(自身を除く): 23295325268

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 2333, 4666, 7207, 9332, 11665, 14414, 23330, 28828, 36035, 46660, 72070, 142313, 144140, 284626, 439627, 569252, 711565, 879254, 1423130, 1758508, 2198135, 2846260, 4396270, 8792540, 16813931, 33627862, 67255724, 84069655, 168139310, 336278620, 1025649791, 2051299582, 4102599164, 5128248955, 10256497910, 20512995820]

約数ペア:

[(1, 20512995820), (2, 10256497910), (4, 5128248955), (5, 4102599164), (10, 2051299582), (20, 1025649791), (61, 336278620), (122, 168139310), (244, 84069655), (305, 67255724), (610, 33627862), (1220, 16813931), (2333, 8792540), (4666, 4396270), (7207, 2846260), (9332, 2198135), (11665, 1758508), (14414, 1423130), (23330, 879254), (28828, 711565), (36035, 569252), (46660, 439627), (72070, 284626), (142313, 144140)]