8106380

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{991}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 17082240

約数和(自身を除く): 8975860

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 991, 1636, 1982, 2045, 3964, 4090, 4955, 8180, 9910, 19820, 405319, 810638, 1621276, 2026595, 4053190, 8106380]

約数ペア:

[(1, 8106380), (2, 4053190), (4, 2026595), (5, 1621276), (10, 810638), (20, 405319), (409, 19820), (818, 9910), (991, 8180), (1636, 4955), (1982, 4090), (2045, 3964)]