20457975

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6653}}^1$

素因数の和:6707

約数の個数: 24

約数和(自身を含む): 34654032

約数和(自身を除く): 14196057

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6653, 19959, 33265, 99795, 166325, 272773, 498975, 818319, 1363865, 4091595, 6819325, 20457975]

約数ペア:

[(1, 20457975), (3, 6819325), (5, 4091595), (15, 1363865), (25, 818319), (41, 498975), (75, 272773), (123, 166325), (205, 99795), (615, 33265), (1025, 19959), (3075, 6653)]