13640025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{25981}}^1$

素因数の和:26001

約数の個数: 24

約数和(自身を含む): 25774144

約数和(自身を除く): 12134119

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 25981, 77943, 129905, 181867, 389715, 545601, 649525, 909335, 1948575, 2728005, 4546675, 13640025]

約数ペア:

[(1, 13640025), (3, 4546675), (5, 2728005), (7, 1948575), (15, 909335), (21, 649525), (25, 545601), (35, 389715), (75, 181867), (105, 129905), (175, 77943), (525, 25981)]