21730960

素因数分解:

$2^4\times 5^1\times {\mathrm{271637}}^1$

素因数の和:271650

約数の個数: 20

約数和(自身を含む): 50524668

約数和(自身を除く): 28793708

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271637, 543274, 1086548, 1358185, 2173096, 2716370, 4346192, 5432740, 10865480, 21730960]

約数ペア:

[(1, 21730960), (2, 10865480), (4, 5432740), (5, 4346192), (8, 2716370), (10, 2173096), (16, 1358185), (20, 1086548), (40, 543274), (80, 271637)]