78540125

素因数分解:

$5^3\times {\mathrm{101}}^1\times {\mathrm{6221}}^1$

素因数の和:6337

約数の個数: 16

約数和(自身を含む): 99004464

約数和(自身を除く): 20464339

約数列:

[1, 5, 25, 101, 125, 505, 2525, 6221, 12625, 31105, 155525, 628321, 777625, 3141605, 15708025, 78540125]

約数ペア:

[(1, 78540125), (5, 15708025), (25, 3141605), (101, 777625), (125, 628321), (505, 155525), (2525, 31105), (6221, 12625)]