20009780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3041}}^1$

素因数の和:3104

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 29051596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3041, 3290, 6082, 6580, 12164, 15205, 21287, 30410, 42574, 60820, 85148, 106435, 142927, 212870, 285854, 425740, 571708, 714635, 1000489, 1429270, 2000978, 2858540, 4001956, 5002445, 10004890, 20009780]

約数ペア:

[(1, 20009780), (2, 10004890), (4, 5002445), (5, 4001956), (7, 2858540), (10, 2000978), (14, 1429270), (20, 1000489), (28, 714635), (35, 571708), (47, 425740), (70, 285854), (94, 212870), (140, 142927), (188, 106435), (235, 85148), (329, 60820), (470, 42574), (658, 30410), (940, 21287), (1316, 15205), (1645, 12164), (3041, 6580), (3290, 6082)]