20121657655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1\times {\mathrm{16361}}^1$

素因数の和:16815

約数の個数: 32

約数和(自身を含む): 26859859200

約数和(自身を除く): 6738201545

約数列:

[1, 5, 11, 55, 59, 295, 379, 649, 1895, 3245, 4169, 16361, 20845, 22361, 81805, 111805, 179971, 245971, 899855, 965299, 1229855, 4826495, 6200819, 10618289, 31004095, 53091445, 68209009, 341045045, 365848321, 1829241605, 4024331531, 20121657655]

約数ペア:

[(1, 20121657655), (5, 4024331531), (11, 1829241605), (55, 365848321), (59, 341045045), (295, 68209009), (379, 53091445), (649, 31004095), (1895, 10618289), (3245, 6200819), (4169, 4826495), (16361, 1229855), (20845, 965299), (22361, 899855), (81805, 245971), (111805, 179971)]