31497980

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3967}}^1$

素因数の和:4373

約数の個数: 24

約数和(自身を含む): 66329088

約数和(自身を除く): 34831108

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3967, 3970, 7934, 7940, 15868, 19835, 39670, 79340, 1574899, 3149798, 6299596, 7874495, 15748990, 31497980]

約数ペア:

[(1, 31497980), (2, 15748990), (4, 7874495), (5, 6299596), (10, 3149798), (20, 1574899), (397, 79340), (794, 39670), (1588, 19835), (1985, 15868), (3967, 7940), (3970, 7934)]