3981020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6421}}^1$

素因数の和:6461

約数の個数: 24

約数和(自身を含む): 8631168

約数和(自身を除く): 4650148

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 6421, 12842, 25684, 32105, 64210, 128420, 199051, 398102, 796204, 995255, 1990510, 3981020]

約数ペア:

[(1, 3981020), (2, 1990510), (4, 995255), (5, 796204), (10, 398102), (20, 199051), (31, 128420), (62, 64210), (124, 32105), (155, 25684), (310, 12842), (620, 6421)]