81922640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14423}}^1$

素因数の和:14507

約数の個数: 40

約数和(自身を含む): 193166208

約数和(自身を除く): 111243568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 14423, 28846, 57692, 72115, 115384, 144230, 230768, 288460, 576920, 1024033, 1153840, 2048066, 4096132, 5120165, 8192264, 10240330, 16384528, 20480660, 40961320, 81922640]

約数ペア:

[(1, 81922640), (2, 40961320), (4, 20480660), (5, 16384528), (8, 10240330), (10, 8192264), (16, 5120165), (20, 4096132), (40, 2048066), (71, 1153840), (80, 1024033), (142, 576920), (284, 288460), (355, 230768), (568, 144230), (710, 115384), (1136, 72115), (1420, 57692), (2840, 28846), (5680, 14423)]