19542710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 39989376

約数和(自身を除く): 20446666

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 121, 155, 242, 310, 341, 521, 605, 682, 1042, 1210, 1705, 2605, 3410, 3751, 5210, 5731, 7502, 11462, 16151, 18755, 28655, 32302, 37510, 57310, 63041, 80755, 126082, 161510, 177661, 315205, 355322, 630410, 888305, 1776610, 1954271, 3908542, 9771355, 19542710]

約数ペア:

[(1, 19542710), (2, 9771355), (5, 3908542), (10, 1954271), (11, 1776610), (22, 888305), (31, 630410), (55, 355322), (62, 315205), (110, 177661), (121, 161510), (155, 126082), (242, 80755), (310, 63041), (341, 57310), (521, 37510), (605, 32302), (682, 28655), (1042, 18755), (1210, 16151), (1705, 11462), (2605, 7502), (3410, 5731), (3751, 5210)]