20101525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{419}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 26560800

約数和(自身を除く): 6459275

約数列:

[1, 5, 19, 25, 95, 101, 419, 475, 505, 1919, 2095, 2525, 7961, 9595, 10475, 39805, 42319, 47975, 199025, 211595, 804061, 1057975, 4020305, 20101525]

約数ペア:

[(1, 20101525), (5, 4020305), (19, 1057975), (25, 804061), (95, 211595), (101, 199025), (419, 47975), (475, 42319), (505, 39805), (1919, 10475), (2095, 9595), (2525, 7961)]