19780244

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{4451}}^1$

素因数の和:4567

約数の個数: 24

約数和(自身を含む): 38144736

約数和(自身を除く): 18364492

約数列:

[1, 2, 4, 11, 22, 44, 101, 202, 404, 1111, 2222, 4444, 4451, 8902, 17804, 48961, 97922, 195844, 449551, 899102, 1798204, 4945061, 9890122, 19780244]

約数ペア:

[(1, 19780244), (2, 9890122), (4, 4945061), (11, 1798204), (22, 899102), (44, 449551), (101, 195844), (202, 97922), (404, 48961), (1111, 17804), (2222, 8902), (4444, 4451)]