19967151

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^2\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 28600704

約数和(自身を除く): 8633553

約数列:

[1, 3, 23, 47, 69, 131, 141, 393, 1081, 2209, 3013, 3243, 6157, 6627, 9039, 18471, 50807, 141611, 152421, 289379, 424833, 868137, 6655717, 19967151]

約数ペア:

[(1, 19967151), (3, 6655717), (23, 868137), (47, 424833), (69, 289379), (131, 152421), (141, 141611), (393, 50807), (1081, 18471), (2209, 9039), (3013, 6627), (3243, 6157)]