19902818879

素因数分解:

${\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{997}}^1\times {\mathrm{2957}}^1$

素因数の和:4154

約数の個数: 16

約数和(自身を含む): 20522887968

約数和(自身を除く): 620069089

約数列:

[1, 43, 157, 997, 2957, 6751, 42871, 127151, 156529, 464249, 2948129, 6730747, 19962707, 126769547, 462856253, 19902818879]

約数ペア:

[(1, 19902818879), (43, 462856253), (157, 126769547), (997, 19962707), (2957, 6730747), (6751, 2948129), (42871, 464249), (127151, 156529)]