20353905

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3163}}^1$

素因数の和:3198

約数の個数: 48

約数和(自身を含む): 41461056

約数和(自身を除く): 21107151

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3163, 6435, 9489, 15815, 28467, 34793, 41119, 47445, 104379, 123357, 142335, 173965, 205595, 313137, 370071, 452309, 521895, 616785, 1356927, 1565685, 1850355, 2261545, 4070781, 6784635, 20353905]

約数ペア:

[(1, 20353905), (3, 6784635), (5, 4070781), (9, 2261545), (11, 1850355), (13, 1565685), (15, 1356927), (33, 616785), (39, 521895), (45, 452309), (55, 370071), (65, 313137), (99, 205595), (117, 173965), (143, 142335), (165, 123357), (195, 104379), (429, 47445), (495, 41119), (585, 34793), (715, 28467), (1287, 15815), (2145, 9489), (3163, 6435)]