20201421775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{2609}}^1\times {\mathrm{16301}}^1$

素因数の和:18939

約数の個数: 24

約数和(自身を含む): 26379896400

約数和(自身を除く): 6178474625

約数列:

[1, 5, 19, 25, 95, 475, 2609, 13045, 16301, 49571, 65225, 81505, 247855, 309719, 407525, 1239275, 1548595, 7742975, 42529309, 212646545, 808056871, 1063232725, 4040284355, 20201421775]

約数ペア:

[(1, 20201421775), (5, 4040284355), (19, 1063232725), (25, 808056871), (95, 212646545), (475, 42529309), (2609, 7742975), (13045, 1548595), (16301, 1239275), (49571, 407525), (65225, 309719), (81505, 247855)]