20672145

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11779}}^1$

素因数の和:11806

約数の個数: 32

約数和(自身を含む): 39580800

約数和(自身を除く): 18908655

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11779, 35337, 58895, 106011, 153127, 176685, 318033, 459381, 530055, 765635, 1378143, 1590165, 2296905, 4134429, 6890715, 20672145]

約数ペア:

[(1, 20672145), (3, 6890715), (5, 4134429), (9, 2296905), (13, 1590165), (15, 1378143), (27, 765635), (39, 530055), (45, 459381), (65, 318033), (117, 176685), (135, 153127), (195, 106011), (351, 58895), (585, 35337), (1755, 11779)]