20745255

素因数分解:

$3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{4447}}^1$

素因数の和:4766

約数の個数: 16

約数和(自身を含む): 33306624

約数和(自身を除く): 12561369

約数列:

[1, 3, 5, 15, 311, 933, 1555, 4447, 4665, 13341, 22235, 66705, 1383017, 4149051, 6915085, 20745255]

約数ペア:

[(1, 20745255), (3, 6915085), (5, 4149051), (15, 1383017), (311, 66705), (933, 22235), (1555, 13341), (4447, 4665)]