21054525

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^2\times {\mathrm{167}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 35893536

約数和(自身を除く): 14839011

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 167, 205, 501, 615, 835, 1025, 1681, 2505, 3075, 4175, 5043, 6847, 8405, 12525, 20541, 25215, 34235, 42025, 102705, 126075, 171175, 280727, 513525, 842181, 1403635, 4210905, 7018175, 21054525]

約数ペア:

[(1, 21054525), (3, 7018175), (5, 4210905), (15, 1403635), (25, 842181), (41, 513525), (75, 280727), (123, 171175), (167, 126075), (205, 102705), (501, 42025), (615, 34235), (835, 25215), (1025, 20541), (1681, 12525), (2505, 8405), (3075, 6847), (4175, 5043)]