20915955

素因数分解:

$3^3\times 5^1\times {\mathrm{154933}}^1$

素因数の和:154947

約数の個数: 16

約数和(自身を含む): 37184160

約数和(自身を除く): 16268205

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154933, 464799, 774665, 1394397, 2323995, 4183191, 6971985, 20915955]

約数ペア:

[(1, 20915955), (3, 6971985), (5, 4183191), (9, 2323995), (15, 1394397), (27, 774665), (45, 464799), (135, 154933)]