64381580

素因数分解:

$2^2\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{2749}}^1$

素因数の和:3929

約数の個数: 24

約数和(自身を含む): 135366000

約数和(自身を除く): 70984420

約数列:

[1, 2, 4, 5, 10, 20, 1171, 2342, 2749, 4684, 5498, 5855, 10996, 11710, 13745, 23420, 27490, 54980, 3219079, 6438158, 12876316, 16095395, 32190790, 64381580]

約数ペア:

[(1, 64381580), (2, 32190790), (4, 16095395), (5, 12876316), (10, 6438158), (20, 3219079), (1171, 54980), (2342, 27490), (2749, 23420), (4684, 13745), (5498, 11710), (5855, 10996)]