64448980

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{8117}}^1$

素因数の和:8523

約数の個数: 24

約数和(自身を含む): 135700488

約数和(自身を除く): 71251508

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 8117, 16234, 32468, 40585, 81170, 162340, 3222449, 6444898, 12889796, 16112245, 32224490, 64448980]

約数ペア:

[(1, 64448980), (2, 32224490), (4, 16112245), (5, 12889796), (10, 6444898), (20, 3222449), (397, 162340), (794, 81170), (1588, 40585), (1985, 32468), (3970, 16234), (7940, 8117)]