20280345

素因数分解:

$3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{5657}}^1$

素因数の和:5904

約数の個数: 16

約数和(自身を含む): 32590080

約数和(自身を除く): 12309735

約数列:

[1, 3, 5, 15, 239, 717, 1195, 3585, 5657, 16971, 28285, 84855, 1352023, 4056069, 6760115, 20280345]

約数ペア:

[(1, 20280345), (3, 6760115), (5, 4056069), (15, 1352023), (239, 84855), (717, 28285), (1195, 16971), (3585, 5657)]