20147125

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 28080000

約数和(自身を除く): 7932875

約数列:

[1, 5, 17, 19, 25, 85, 95, 125, 323, 425, 475, 499, 1615, 2125, 2375, 2495, 8075, 8483, 9481, 12475, 40375, 42415, 47405, 62375, 161177, 212075, 237025, 805885, 1060375, 1185125, 4029425, 20147125]

約数ペア:

[(1, 20147125), (5, 4029425), (17, 1185125), (19, 1060375), (25, 805885), (85, 237025), (95, 212075), (125, 161177), (323, 62375), (425, 47405), (475, 42415), (499, 40375), (1615, 12475), (2125, 9481), (2375, 8483), (2495, 8075)]