19939905

素因数分解:

$3^3\times 5^1\times {\mathrm{147703}}^1$

素因数の和:147717

約数の個数: 16

約数和(自身を含む): 35448960

約数和(自身を除く): 15509055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147703, 443109, 738515, 1329327, 2215545, 3987981, 6646635, 19939905]

約数ペア:

[(1, 19939905), (3, 6646635), (5, 3987981), (9, 2215545), (15, 1329327), (27, 738515), (45, 443109), (135, 147703)]