28391620

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1453}}^1$

素因数の和:2439

約数の個数: 24

約数和(自身を含む): 59724504

約数和(自身を除く): 31332884

約数列:

[1, 2, 4, 5, 10, 20, 977, 1453, 1954, 2906, 3908, 4885, 5812, 7265, 9770, 14530, 19540, 29060, 1419581, 2839162, 5678324, 7097905, 14195810, 28391620]

約数ペア:

[(1, 28391620), (2, 14195810), (4, 7097905), (5, 5678324), (10, 2839162), (20, 1419581), (977, 29060), (1453, 19540), (1954, 14530), (2906, 9770), (3908, 7265), (4885, 5812)]