20913964

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{227}}^1\times {\mathrm{743}}^1$

素因数の和:1005

約数の個数: 24

約数和(自身を含む): 37997568

約数和(自身を除く): 17083604

約数列:

[1, 2, 4, 31, 62, 124, 227, 454, 743, 908, 1486, 2972, 7037, 14074, 23033, 28148, 46066, 92132, 168661, 337322, 674644, 5228491, 10456982, 20913964]

約数ペア:

[(1, 20913964), (2, 10456982), (4, 5228491), (31, 674644), (62, 337322), (124, 168661), (227, 92132), (454, 46066), (743, 28148), (908, 23033), (1486, 14074), (2972, 7037)]