28650830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220391}}^1$

素因数の和:220411

約数の個数: 16

約数和(自身を含む): 55538784

約数和(自身を除く): 26887954

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220391, 440782, 1101955, 2203910, 2865083, 5730166, 14325415, 28650830]

約数ペア:

[(1, 28650830), (2, 14325415), (5, 5730166), (10, 2865083), (13, 2203910), (26, 1101955), (65, 440782), (130, 220391)]