21875231

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{1637}}^1$

素因数の和:1750

約数の個数: 16

約数和(自身を含む): 26417664

約数和(自身を除く): 4542433

約数列:

[1, 7, 23, 83, 161, 581, 1637, 1909, 11459, 13363, 37651, 135871, 263557, 951097, 3125033, 21875231]

約数ペア:

[(1, 21875231), (7, 3125033), (23, 951097), (83, 263557), (161, 135871), (581, 37651), (1637, 13363), (1909, 11459)]