21525

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1$

素因数の和:61

約数の個数: 24

約数和(自身を含む): 41664

約数和(自身を除く): 20139

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 1025, 1435, 3075, 4305, 7175, 21525]

約数ペア:

[(1, 21525), (3, 7175), (5, 4305), (7, 3075), (15, 1435), (21, 1025), (25, 861), (35, 615), (41, 525), (75, 287), (105, 205), (123, 175)]