21462640

素因数分解:

$2^4\times 5^1\times {\mathrm{268283}}^1$

素因数の和:268296

約数の個数: 20

約数和(自身を含む): 49900824

約数和(自身を除く): 28438184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 268283, 536566, 1073132, 1341415, 2146264, 2682830, 4292528, 5365660, 10731320, 21462640]

約数ペア:

[(1, 21462640), (2, 10731320), (4, 5365660), (5, 4292528), (8, 2682830), (10, 2146264), (16, 1341415), (20, 1073132), (40, 536566), (80, 268283)]