2819920

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{349}}^1$

素因数の和:463

約数の個数: 40

約数和(自身を含む): 6640200

約数和(自身を除く): 3820280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 349, 404, 505, 698, 808, 1010, 1396, 1616, 1745, 2020, 2792, 3490, 4040, 5584, 6980, 8080, 13960, 27920, 35249, 70498, 140996, 176245, 281992, 352490, 563984, 704980, 1409960, 2819920]

約数ペア:

[(1, 2819920), (2, 1409960), (4, 704980), (5, 563984), (8, 352490), (10, 281992), (16, 176245), (20, 140996), (40, 70498), (80, 35249), (101, 27920), (202, 13960), (349, 8080), (404, 6980), (505, 5584), (698, 4040), (808, 3490), (1010, 2792), (1396, 2020), (1616, 1745)]