19628620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8111}}^1$

素因数の和:8142

約数の個数: 36

約数和(自身を含む): 45313632

約数和(自身を除く): 25685012

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8111, 16222, 32444, 40555, 81110, 89221, 162220, 178442, 356884, 446105, 892210, 981431, 1784420, 1962862, 3925724, 4907155, 9814310, 19628620]

約数ペア:

[(1, 19628620), (2, 9814310), (4, 4907155), (5, 3925724), (10, 1962862), (11, 1784420), (20, 981431), (22, 892210), (44, 446105), (55, 356884), (110, 178442), (121, 162220), (220, 89221), (242, 81110), (484, 40555), (605, 32444), (1210, 16222), (2420, 8111)]