18487820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{337}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 42133728

約数和(自身を除く): 23645908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 211, 260, 337, 422, 674, 844, 1055, 1348, 1685, 2110, 2743, 3370, 4220, 4381, 5486, 6740, 8762, 10972, 13715, 17524, 21905, 27430, 43810, 54860, 71107, 87620, 142214, 284428, 355535, 711070, 924391, 1422140, 1848782, 3697564, 4621955, 9243910, 18487820]

約数ペア:

[(1, 18487820), (2, 9243910), (4, 4621955), (5, 3697564), (10, 1848782), (13, 1422140), (20, 924391), (26, 711070), (52, 355535), (65, 284428), (130, 142214), (211, 87620), (260, 71107), (337, 54860), (422, 43810), (674, 27430), (844, 21905), (1055, 17524), (1348, 13715), (1685, 10972), (2110, 8762), (2743, 6740), (3370, 5486), (4220, 4381)]