642305240

素因数分解:

$2^3\times 5^1\times {\mathrm{16057631}}^1$

素因数の和:16057642

約数の個数: 16

約数和(自身を含む): 1445186880

約数和(自身を除く): 802881640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16057631, 32115262, 64230524, 80288155, 128461048, 160576310, 321152620, 642305240]

約数ペア:

[(1, 642305240), (2, 321152620), (4, 160576310), (5, 128461048), (8, 80288155), (10, 64230524), (20, 32115262), (40, 16057631)]