20901945

素因数分解:

$3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{3407}}^1$

素因数の和:3824

約数の個数: 16

約数和(自身を含む): 33534720

約数和(自身を除く): 12632775

約数列:

[1, 3, 5, 15, 409, 1227, 2045, 3407, 6135, 10221, 17035, 51105, 1393463, 4180389, 6967315, 20901945]

約数ペア:

[(1, 20901945), (3, 6967315), (5, 4180389), (15, 1393463), (409, 51105), (1227, 17035), (2045, 10221), (3407, 6135)]