1387260721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{486929}}^1$

素因数の和:486984

約数の個数: 16

約数和(自身を含む): 1776320640

約数和(自身を除く): 389059919

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 486929, 3408503, 5356219, 18016373, 37493533, 126114611, 198180103, 1387260721]

約数ペア:

[(1, 1387260721), (7, 198180103), (11, 126114611), (37, 37493533), (77, 18016373), (259, 5356219), (407, 3408503), (2849, 486929)]