21912191

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 25652544

約数和(自身を除く): 3740353

約数列:

[1, 7, 73, 137, 313, 511, 959, 2191, 10001, 22849, 42881, 70007, 159943, 300167, 3130313, 21912191]

約数ペア:

[(1, 21912191), (7, 3130313), (73, 300167), (137, 159943), (313, 70007), (511, 42881), (959, 22849), (2191, 10001)]