21098960

素因数分解:

$2^4\times 5^1\times {\mathrm{263737}}^1$

素因数の和:263750

約数の個数: 20

約数和(自身を含む): 49055268

約数和(自身を除く): 27956308

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263737, 527474, 1054948, 1318685, 2109896, 2637370, 4219792, 5274740, 10549480, 21098960]

約数ペア:

[(1, 21098960), (2, 10549480), (4, 5274740), (5, 4219792), (8, 2637370), (10, 2109896), (16, 1318685), (20, 1054948), (40, 527474), (80, 263737)]