20619764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{2221}}^1$

素因数の和:2447

約数の個数: 24

約数和(自身を含む): 39569376

約数和(自身を除く): 18949612

約数列:

[1, 2, 4, 11, 22, 44, 211, 422, 844, 2221, 2321, 4442, 4642, 8884, 9284, 24431, 48862, 97724, 468631, 937262, 1874524, 5154941, 10309882, 20619764]

約数ペア:

[(1, 20619764), (2, 10309882), (4, 5154941), (11, 1874524), (22, 937262), (44, 468631), (211, 97724), (422, 48862), (844, 24431), (2221, 9284), (2321, 8884), (4442, 4642)]