221551169

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{1999}}^1$

素因数の和:2300

約数の個数: 16

約数和(自身を含む): 258048000

約数和(自身を除く): 36496831

約数列:

[1, 7, 71, 223, 497, 1561, 1999, 13993, 15833, 110831, 141929, 445777, 993503, 3120439, 31650167, 221551169]

約数ペア:

[(1, 221551169), (7, 31650167), (71, 3120439), (223, 993503), (497, 445777), (1561, 141929), (1999, 110831), (13993, 15833)]