18901215

素因数分解:

$3^3\times 5^1\times {\mathrm{140009}}^1$

素因数の和:140023

約数の個数: 16

約数和(自身を含む): 33602400

約数和(自身を除く): 14701185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 140009, 420027, 700045, 1260081, 2100135, 3780243, 6300405, 18901215]

約数ペア:

[(1, 18901215), (3, 6300405), (5, 3780243), (9, 2100135), (15, 1260081), (27, 700045), (45, 420027), (135, 140009)]