18688640

素因数分解:

$2^7\times 5^1\times {\mathrm{29201}}^1$

素因数の和:29220

約数の個数: 32

約数和(自身を含む): 44679060

約数和(自身を除く): 25990420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 29201, 58402, 116804, 146005, 233608, 292010, 467216, 584020, 934432, 1168040, 1868864, 2336080, 3737728, 4672160, 9344320, 18688640]

約数ペア:

[(1, 18688640), (2, 9344320), (4, 4672160), (5, 3737728), (8, 2336080), (10, 1868864), (16, 1168040), (20, 934432), (32, 584020), (40, 467216), (64, 292010), (80, 233608), (128, 146005), (160, 116804), (320, 58402), (640, 29201)]