31512890

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{8101}}^1$

素因数の和:8497

約数の個数: 16

約数和(自身を含む): 56876040

約数和(自身を除く): 25363150

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 8101, 16202, 40505, 81010, 3151289, 6302578, 15756445, 31512890]

約数ペア:

[(1, 31512890), (2, 15756445), (5, 6302578), (10, 3151289), (389, 81010), (778, 40505), (1945, 16202), (3890, 8101)]