20005155

素因数分解:

$3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1061}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 34791120

約数和(自身を除く): 14785965

約数列:

[1, 3, 5, 9, 15, 45, 419, 1061, 1257, 2095, 3183, 3771, 5305, 6285, 9549, 15915, 18855, 47745, 444559, 1333677, 2222795, 4001031, 6668385, 20005155]

約数ペア:

[(1, 20005155), (3, 6668385), (5, 4001031), (9, 2222795), (15, 1333677), (45, 444559), (419, 47745), (1061, 18855), (1257, 15915), (2095, 9549), (3183, 6285), (3771, 5305)]