129928640

素因数分解:

$2^6\times 5^1\times {\mathrm{406027}}^1$

素因数の和:406044

約数の個数: 28

約数和(自身を含む): 309393336

約数和(自身を除く): 179464696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 406027, 812054, 1624108, 2030135, 3248216, 4060270, 6496432, 8120540, 12992864, 16241080, 25985728, 32482160, 64964320, 129928640]

約数ペア:

[(1, 129928640), (2, 64964320), (4, 32482160), (5, 25985728), (8, 16241080), (10, 12992864), (16, 8120540), (20, 6496432), (32, 4060270), (40, 3248216), (64, 2030135), (80, 1624108), (160, 812054), (320, 406027)]