21274136

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{607}}^1$

素因数の和:963

約数の個数: 32

約数和(自身を含む): 43155840

約数和(自身を除く): 21881704

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 337, 607, 674, 1214, 1348, 2428, 2696, 4381, 4856, 7891, 8762, 15782, 17524, 31564, 35048, 63128, 204559, 409118, 818236, 1636472, 2659267, 5318534, 10637068, 21274136]

約数ペア:

[(1, 21274136), (2, 10637068), (4, 5318534), (8, 2659267), (13, 1636472), (26, 818236), (52, 409118), (104, 204559), (337, 63128), (607, 35048), (674, 31564), (1214, 17524), (1348, 15782), (2428, 8762), (2696, 7891), (4381, 4856)]