156721779

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{245261}}^1$

素因数の和:245338

約数の個数: 12

約数和(自身を含む): 229565232

約数和(自身を除く): 72843453

約数列:

[1, 3, 9, 71, 213, 639, 245261, 735783, 2207349, 17413531, 52240593, 156721779]

約数ペア:

[(1, 156721779), (3, 52240593), (9, 17413531), (71, 2207349), (213, 735783), (639, 245261)]