65400640

素因数分解:

$2^6\times 5^1\times {\mathrm{204377}}^1$

素因数の和:204394

約数の個数: 28

約数和(自身を含む): 155736036

約数和(自身を除く): 90335396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 204377, 408754, 817508, 1021885, 1635016, 2043770, 3270032, 4087540, 6540064, 8175080, 13080128, 16350160, 32700320, 65400640]

約数ペア:

[(1, 65400640), (2, 32700320), (4, 16350160), (5, 13080128), (8, 8175080), (10, 6540064), (16, 4087540), (20, 3270032), (32, 2043770), (40, 1635016), (64, 1021885), (80, 817508), (160, 408754), (320, 204377)]