21905025

素因数分解:

$3^1\times 5^2\times {\mathrm{97}}^1\times {\mathrm{3011}}^1$

素因数の和:3121

約数の個数: 24

約数和(自身を含む): 36601824

約数和(自身を除く): 14696799

約数列:

[1, 3, 5, 15, 25, 75, 97, 291, 485, 1455, 2425, 3011, 7275, 9033, 15055, 45165, 75275, 225825, 292067, 876201, 1460335, 4381005, 7301675, 21905025]

約数ペア:

[(1, 21905025), (3, 7301675), (5, 4381005), (15, 1460335), (25, 876201), (75, 292067), (97, 225825), (291, 75275), (485, 45165), (1455, 15055), (2425, 9033), (3011, 7275)]