20451704

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2161}}^1$

素因数の和:2200

約数の個数: 48

約数和(自身を含む): 47477520

約数和(自身を除く): 27025816

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2161, 2366, 4322, 4732, 8644, 9464, 15127, 17288, 28093, 30254, 56186, 60508, 112372, 121016, 196651, 224744, 365209, 393302, 730418, 786604, 1460836, 1573208, 2556463, 2921672, 5112926, 10225852, 20451704]

約数ペア:

[(1, 20451704), (2, 10225852), (4, 5112926), (7, 2921672), (8, 2556463), (13, 1573208), (14, 1460836), (26, 786604), (28, 730418), (52, 393302), (56, 365209), (91, 224744), (104, 196651), (169, 121016), (182, 112372), (338, 60508), (364, 56186), (676, 30254), (728, 28093), (1183, 17288), (1352, 15127), (2161, 9464), (2366, 8644), (4322, 4732)]