20218445

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4261}}^1$

素因数の和:4352

約数の個数: 16

約数和(自身を含む): 26492592

約数和(自身を除く): 6274147

約数列:

[1, 5, 13, 65, 73, 365, 949, 4261, 4745, 21305, 55393, 276965, 311053, 1555265, 4043689, 20218445]

約数ペア:

[(1, 20218445), (5, 4043689), (13, 1555265), (65, 311053), (73, 276965), (365, 55393), (949, 21305), (4261, 4745)]