64681280

素因数分解:

$2^6\times 5^1\times {\mathrm{202129}}^1$

素因数の和:202146

約数の個数: 28

約数和(自身を含む): 154023060

約数和(自身を除く): 89341780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 202129, 404258, 808516, 1010645, 1617032, 2021290, 3234064, 4042580, 6468128, 8085160, 12936256, 16170320, 32340640, 64681280]

約数ペア:

[(1, 64681280), (2, 32340640), (4, 16170320), (5, 12936256), (8, 8085160), (10, 6468128), (16, 4042580), (20, 3234064), (32, 2021290), (40, 1617032), (64, 1010645), (80, 808516), (160, 404258), (320, 202129)]