28571660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109891}}^1$

素因数の和:109913

約数の個数: 24

約数和(自身を含む): 64616496

約数和(自身を除く): 36044836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109891, 219782, 439564, 549455, 1098910, 1428583, 2197820, 2857166, 5714332, 7142915, 14285830, 28571660]

約数ペア:

[(1, 28571660), (2, 14285830), (4, 7142915), (5, 5714332), (10, 2857166), (13, 2197820), (20, 1428583), (26, 1098910), (52, 549455), (65, 439564), (130, 219782), (260, 109891)]