18859905

素因数分解:

$3^3\times 5^1\times {\mathrm{139703}}^1$

素因数の和:139717

約数の個数: 16

約数和(自身を含む): 33528960

約数和(自身を除く): 14669055

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139703, 419109, 698515, 1257327, 2095545, 3771981, 6286635, 18859905]

約数ペア:

[(1, 18859905), (3, 6286635), (5, 3771981), (9, 2095545), (15, 1257327), (27, 698515), (45, 419109), (135, 139703)]