204381640

素因数分解:

$2^3\times 5^1\times {\mathrm{5109541}}^1$

素因数の和:5109552

約数の個数: 16

約数和(自身を含む): 459858780

約数和(自身を除く): 255477140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5109541, 10219082, 20438164, 25547705, 40876328, 51095410, 102190820, 204381640]

約数ペア:

[(1, 204381640), (2, 102190820), (4, 51095410), (5, 40876328), (8, 25547705), (10, 20438164), (20, 10219082), (40, 5109541)]