20553615

素因数分解:

$3^3\times 5^1\times {\mathrm{152249}}^1$

素因数の和:152263

約数の個数: 16

約数和(自身を含む): 36540000

約数和(自身を除く): 15986385

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 152249, 456747, 761245, 1370241, 2283735, 4110723, 6851205, 20553615]

約数ペア:

[(1, 20553615), (3, 6851205), (5, 4110723), (9, 2283735), (15, 1370241), (27, 761245), (45, 456747), (135, 152249)]