28201480

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2267}}^1$

素因数の和:2589

約数の個数: 32

約数和(自身を含む): 63685440

約数和(自身を除く): 35483960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2267, 2488, 3110, 4534, 6220, 9068, 11335, 12440, 18136, 22670, 45340, 90680, 705037, 1410074, 2820148, 3525185, 5640296, 7050370, 14100740, 28201480]

約数ペア:

[(1, 28201480), (2, 14100740), (4, 7050370), (5, 5640296), (8, 3525185), (10, 2820148), (20, 1410074), (40, 705037), (311, 90680), (622, 45340), (1244, 22670), (1555, 18136), (2267, 12440), (2488, 11335), (3110, 9068), (4534, 6220)]