28555891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{2777}}^1$

素因数の和:2910

約数の個数: 16

約数和(自身を含む): 35469504

約数和(自身を除く): 6913613

約数列:

[1, 7, 13, 91, 113, 791, 1469, 2777, 10283, 19439, 36101, 252707, 313801, 2196607, 4079413, 28555891]

約数ペア:

[(1, 28555891), (7, 4079413), (13, 2196607), (91, 313801), (113, 252707), (791, 36101), (1469, 19439), (2777, 10283)]