408812920

素因数分解:

$2^3\times 5^1\times {\mathrm{10220323}}^1$

素因数の和:10220334

約数の個数: 16

約数和(自身を含む): 919829160

約数和(自身を除く): 511016240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10220323, 20440646, 40881292, 51101615, 81762584, 102203230, 204406460, 408812920]

約数ペア:

[(1, 408812920), (2, 204406460), (4, 102203230), (5, 81762584), (8, 51101615), (10, 40881292), (20, 20440646), (40, 10220323)]