20928430

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72167}}^1$

素因数の和:72203

約数の個数: 16

約数和(自身を含む): 38970720

約数和(自身を除く): 18042290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72167, 144334, 360835, 721670, 2092843, 4185686, 10464215, 20928430]

約数ペア:

[(1, 20928430), (2, 10464215), (5, 4185686), (10, 2092843), (29, 721670), (58, 360835), (145, 144334), (290, 72167)]