221513721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{516349}}^1$

素因数の和:516376

約数の個数: 16

約数和(自身を含む): 346987200

約数和(自身を除く): 125473479

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 516349, 1549047, 5679839, 6712537, 17039517, 20137611, 73837907, 221513721]

約数ペア:

[(1, 221513721), (3, 73837907), (11, 20137611), (13, 17039517), (33, 6712537), (39, 5679839), (143, 1549047), (429, 516349)]