20376615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4129}}^1$

素因数の和:4191

約数の個数: 32

約数和(自身を含む): 38062080

約数和(自身を除く): 17685465

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4129, 4935, 12387, 20645, 28903, 61935, 86709, 144515, 194063, 433545, 582189, 970315, 1358441, 2910945, 4075323, 6792205, 20376615]

約数ペア:

[(1, 20376615), (3, 6792205), (5, 4075323), (7, 2910945), (15, 1358441), (21, 970315), (35, 582189), (47, 433545), (105, 194063), (141, 144515), (235, 86709), (329, 61935), (705, 28903), (987, 20645), (1645, 12387), (4129, 4935)]