20098910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{443}}^1$

素因数の和:812

約数の個数: 32

約数和(自身を含む): 39160800

約数和(自身を除く): 19061890

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 349, 443, 698, 886, 1745, 2215, 3490, 4430, 4537, 5759, 9074, 11518, 22685, 28795, 45370, 57590, 154607, 309214, 773035, 1546070, 2009891, 4019782, 10049455, 20098910]

約数ペア:

[(1, 20098910), (2, 10049455), (5, 4019782), (10, 2009891), (13, 1546070), (26, 773035), (65, 309214), (130, 154607), (349, 57590), (443, 45370), (698, 28795), (886, 22685), (1745, 11518), (2215, 9074), (3490, 5759), (4430, 4537)]