18820215

素因数分解:

$3^3\times 5^1\times {\mathrm{139409}}^1$

素因数の和:139423

約数の個数: 16

約数和(自身を含む): 33458400

約数和(自身を除く): 14638185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139409, 418227, 697045, 1254681, 2091135, 3764043, 6273405, 18820215]

約数ペア:

[(1, 18820215), (3, 6273405), (5, 3764043), (9, 2091135), (15, 1254681), (27, 697045), (45, 418227), (135, 139409)]