19816155

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7219}}^1$

素因数の和:7291

約数の個数: 24

約数和(自身を含む): 34915920

約数和(自身を除く): 15099765

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7219, 21657, 36095, 64971, 108285, 324855, 440359, 1321077, 2201795, 3963231, 6605385, 19816155]

約数ペア:

[(1, 19816155), (3, 6605385), (5, 3963231), (9, 2201795), (15, 1321077), (45, 440359), (61, 324855), (183, 108285), (305, 64971), (549, 36095), (915, 21657), (2745, 7219)]