15561320

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{691}}^1$

素因数の和:1265

約数の個数: 32

約数和(自身を含む): 35125920

約数和(自身を除く): 19564600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 691, 1126, 1382, 2252, 2764, 2815, 3455, 4504, 5528, 5630, 6910, 11260, 13820, 22520, 27640, 389033, 778066, 1556132, 1945165, 3112264, 3890330, 7780660, 15561320]

約数ペア:

[(1, 15561320), (2, 7780660), (4, 3890330), (5, 3112264), (8, 1945165), (10, 1556132), (20, 778066), (40, 389033), (563, 27640), (691, 22520), (1126, 13820), (1382, 11260), (2252, 6910), (2764, 5630), (2815, 5528), (3455, 4504)]