13125

素因数分解:

$3^1\times 5^4\times 7^1$

素因数の和:30

約数の個数: 20

約数和(自身を含む): 24992

約数和(自身を除く): 11867

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 625, 875, 1875, 2625, 4375, 13125]

約数ペア:

[(1, 13125), (3, 4375), (5, 2625), (7, 1875), (15, 875), (21, 625), (25, 525), (35, 375), (75, 175), (105, 125)]