21384428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1949}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 40513200

約数和(自身を除く): 19128772

約数列:

[1, 2, 4, 13, 26, 52, 211, 422, 844, 1949, 2743, 3898, 5486, 7796, 10972, 25337, 50674, 101348, 411239, 822478, 1644956, 5346107, 10692214, 21384428]

約数ペア:

[(1, 21384428), (2, 10692214), (4, 5346107), (13, 1644956), (26, 822478), (52, 411239), (211, 101348), (422, 50674), (844, 25337), (1949, 10972), (2743, 7796), (3898, 5486)]