20637188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 42947520

約数和(自身を除く): 22310332

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 109, 143, 218, 286, 331, 436, 572, 662, 1199, 1324, 1417, 2398, 2834, 3641, 4303, 4796, 5668, 7282, 8606, 14564, 15587, 17212, 31174, 36079, 47333, 62348, 72158, 94666, 144316, 189332, 396869, 469027, 793738, 938054, 1587476, 1876108, 5159297, 10318594, 20637188]

約数ペア:

[(1, 20637188), (2, 10318594), (4, 5159297), (11, 1876108), (13, 1587476), (22, 938054), (26, 793738), (44, 469027), (52, 396869), (109, 189332), (143, 144316), (218, 94666), (286, 72158), (331, 62348), (436, 47333), (572, 36079), (662, 31174), (1199, 17212), (1324, 15587), (1417, 14564), (2398, 8606), (2834, 7282), (3641, 5668), (4303, 4796)]