20395025

素因数分解:

$5^2\times 7^2\times {\mathrm{16649}}^1$

素因数の和:16673

約数の個数: 18

約数和(自身を含む): 29420550

約数和(自身を除く): 9025525

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 16649, 83245, 116543, 416225, 582715, 815801, 2913575, 4079005, 20395025]

約数ペア:

[(1, 20395025), (5, 4079005), (7, 2913575), (25, 815801), (35, 582715), (49, 416225), (175, 116543), (245, 83245), (1225, 16649)]