20210491

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 24952320

約数和(自身を除く): 4741829

約数列:

[1, 7, 23, 49, 79, 161, 227, 553, 1127, 1589, 1817, 3871, 5221, 11123, 12719, 17933, 36547, 89033, 125531, 255829, 412459, 878717, 2887213, 20210491]

約数ペア:

[(1, 20210491), (7, 2887213), (23, 878717), (49, 412459), (79, 255829), (161, 125531), (227, 89033), (553, 36547), (1127, 17933), (1589, 12719), (1817, 11123), (3871, 5221)]