20787897

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{1231}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 29942528

約数和(自身を除く): 9154631

約数列:

[1, 3, 13, 39, 433, 1231, 1299, 3693, 5629, 16003, 16887, 48009, 533023, 1599069, 6929299, 20787897]

約数ペア:

[(1, 20787897), (3, 6929299), (13, 1599069), (39, 533023), (433, 48009), (1231, 16887), (1299, 16003), (3693, 5629)]