19986237

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{43543}}^1$

素因数の和:43569

約数の個数: 16

約数和(自身を含む): 31351680

約数和(自身を除く): 11365443

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 43543, 130629, 391887, 740231, 1175661, 2220693, 6662079, 19986237]

約数ペア:

[(1, 19986237), (3, 6662079), (9, 2220693), (17, 1175661), (27, 740231), (51, 391887), (153, 130629), (459, 43543)]