18991395

素因数分解:

$3^3\times 5^1\times {\mathrm{140677}}^1$

素因数の和:140691

約数の個数: 16

約数和(自身を含む): 33762720

約数和(自身を除く): 14771325

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 140677, 422031, 703385, 1266093, 2110155, 3798279, 6330465, 18991395]

約数ペア:

[(1, 18991395), (3, 6330465), (5, 3798279), (9, 2110155), (15, 1266093), (27, 703385), (45, 422031), (135, 140677)]