7242640

素因数分解:

$2^4\times 5^1\times {\mathrm{90533}}^1$

素因数の和:90546

約数の個数: 20

約数和(自身を含む): 16839324

約数和(自身を除く): 9596684

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 90533, 181066, 362132, 452665, 724264, 905330, 1448528, 1810660, 3621320, 7242640]

約数ペア:

[(1, 7242640), (2, 3621320), (4, 1810660), (5, 1448528), (8, 905330), (10, 724264), (16, 452665), (20, 362132), (40, 181066), (80, 90533)]