20550790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{547}}^1$

素因数の和:601

約数の個数: 48

約数和(自身を含む): 42395472

約数和(自身を除く): 21844682

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 289, 442, 547, 578, 1094, 1105, 1445, 2210, 2735, 2890, 3757, 5470, 7111, 7514, 9299, 14222, 18598, 18785, 35555, 37570, 46495, 71110, 92990, 120887, 158083, 241774, 316166, 604435, 790415, 1208870, 1580830, 2055079, 4110158, 10275395, 20550790]

約数ペア:

[(1, 20550790), (2, 10275395), (5, 4110158), (10, 2055079), (13, 1580830), (17, 1208870), (26, 790415), (34, 604435), (65, 316166), (85, 241774), (130, 158083), (170, 120887), (221, 92990), (289, 71110), (442, 46495), (547, 37570), (578, 35555), (1094, 18785), (1105, 18598), (1445, 14222), (2210, 9299), (2735, 7514), (2890, 7111), (3757, 5470)]