12990771

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 20015424

約数和(自身を除く): 7024653

約数列:

[1, 3, 9, 17, 51, 153, 197, 431, 591, 1293, 1773, 3349, 3879, 7327, 10047, 21981, 30141, 65943, 84907, 254721, 764163, 1443419, 4330257, 12990771]

約数ペア:

[(1, 12990771), (3, 4330257), (9, 1443419), (17, 764163), (51, 254721), (153, 84907), (197, 65943), (431, 30141), (591, 21981), (1293, 10047), (1773, 7327), (3349, 3879)]