21165225

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6883}}^1$

素因数の和:6937

約数の個数: 24

約数和(自身を含む): 35851872

約数和(自身を除く): 14686647

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6883, 20649, 34415, 103245, 172075, 282203, 516225, 846609, 1411015, 4233045, 7055075, 21165225]

約数ペア:

[(1, 21165225), (3, 7055075), (5, 4233045), (15, 1411015), (25, 846609), (41, 516225), (75, 282203), (123, 172075), (205, 103245), (615, 34415), (1025, 20649), (3075, 6883)]