20558680

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 28689320

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 37, 40, 58, 74, 116, 145, 148, 185, 232, 290, 296, 370, 479, 580, 740, 958, 1073, 1160, 1480, 1916, 2146, 2395, 3832, 4292, 4790, 5365, 8584, 9580, 10730, 13891, 17723, 19160, 21460, 27782, 35446, 42920, 55564, 69455, 70892, 88615, 111128, 138910, 141784, 177230, 277820, 354460, 513967, 555640, 708920, 1027934, 2055868, 2569835, 4111736, 5139670, 10279340, 20558680]

約数ペア:

[(1, 20558680), (2, 10279340), (4, 5139670), (5, 4111736), (8, 2569835), (10, 2055868), (20, 1027934), (29, 708920), (37, 555640), (40, 513967), (58, 354460), (74, 277820), (116, 177230), (145, 141784), (148, 138910), (185, 111128), (232, 88615), (290, 70892), (296, 69455), (370, 55564), (479, 42920), (580, 35446), (740, 27782), (958, 21460), (1073, 19160), (1160, 17723), (1480, 13891), (1916, 10730), (2146, 9580), (2395, 8584), (3832, 5365), (4292, 4790)]