65401780

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{8237}}^1$

素因数の和:8643

約数の個数: 24

約数和(自身を含む): 137706408

約数和(自身を除く): 72304628

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 8237, 16474, 32948, 41185, 82370, 164740, 3270089, 6540178, 13080356, 16350445, 32700890, 65401780]

約数ペア:

[(1, 65401780), (2, 32700890), (4, 16350445), (5, 13080356), (10, 6540178), (20, 3270089), (397, 164740), (794, 82370), (1588, 41185), (1985, 32948), (3970, 16474), (7940, 8237)]