51616640

素因数分解:

$2^7\times 5^1\times {\mathrm{80651}}^1$

素因数の和:80670

約数の個数: 32

約数和(自身を含む): 123397560

約数和(自身を除く): 71780920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 80651, 161302, 322604, 403255, 645208, 806510, 1290416, 1613020, 2580832, 3226040, 5161664, 6452080, 10323328, 12904160, 25808320, 51616640]

約数ペア:

[(1, 51616640), (2, 25808320), (4, 12904160), (5, 10323328), (8, 6452080), (10, 5161664), (16, 3226040), (20, 2580832), (32, 1613020), (40, 1290416), (64, 806510), (80, 645208), (128, 403255), (160, 322604), (320, 161302), (640, 80651)]