51215125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31517}}^1$

素因数の和:31545

約数の個数: 16

約数和(自身を含む): 68835312

約数和(自身を除く): 17620187

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 31517, 157585, 409721, 787925, 2048605, 3939625, 10243025, 51215125]

約数ペア:

[(1, 51215125), (5, 10243025), (13, 3939625), (25, 2048605), (65, 787925), (125, 409721), (325, 157585), (1625, 31517)]