18724975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 24800000

約数和(自身を除く): 6075025

約数列:

[1, 5, 19, 25, 79, 95, 395, 475, 499, 1501, 1975, 2495, 7505, 9481, 12475, 37525, 39421, 47405, 197105, 237025, 748999, 985525, 3744995, 18724975]

約数ペア:

[(1, 18724975), (5, 3744995), (19, 985525), (25, 748999), (79, 237025), (95, 197105), (395, 47405), (475, 39421), (499, 37525), (1501, 12475), (1975, 9481), (2495, 7505)]