19615816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2207}}^1$

素因数の和:2325

約数の個数: 32

約数和(自身を含む): 40538880

約数和(自身を除く): 20923064

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2207, 2222, 4414, 4444, 8828, 8888, 17656, 24277, 48554, 97108, 194216, 222907, 445814, 891628, 1783256, 2451977, 4903954, 9807908, 19615816]

約数ペア:

[(1, 19615816), (2, 9807908), (4, 4903954), (8, 2451977), (11, 1783256), (22, 891628), (44, 445814), (88, 222907), (101, 194216), (202, 97108), (404, 48554), (808, 24277), (1111, 17656), (2207, 8888), (2222, 8828), (4414, 4444)]