20812568

素因数分解:

$2^3\times 7^1\times {\mathrm{419}}^1\times {\mathrm{887}}^1$

素因数の和:1319

約数の個数: 32

約数和(自身を含む): 44755200

約数和(自身を除く): 23942632

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 419, 838, 887, 1676, 1774, 2933, 3352, 3548, 5866, 6209, 7096, 11732, 12418, 23464, 24836, 49672, 371653, 743306, 1486612, 2601571, 2973224, 5203142, 10406284, 20812568]

約数ペア:

[(1, 20812568), (2, 10406284), (4, 5203142), (7, 2973224), (8, 2601571), (14, 1486612), (28, 743306), (56, 371653), (419, 49672), (838, 24836), (887, 23464), (1676, 12418), (1774, 11732), (2933, 7096), (3352, 6209), (3548, 5866)]