64091980

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{16267}}^1$

素因数の和:16473

約数の個数: 24

約数和(自身を含む): 135284688

約数和(自身を除く): 71192708

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 16267, 32534, 65068, 81335, 162670, 325340, 3204599, 6409198, 12818396, 16022995, 32045990, 64091980]

約数ペア:

[(1, 64091980), (2, 32045990), (4, 16022995), (5, 12818396), (10, 6409198), (20, 3204599), (197, 325340), (394, 162670), (788, 81335), (985, 65068), (1970, 32534), (3940, 16267)]