221145381

素因数分解:

$3^2\times {\mathrm{173}}^2\times {\mathrm{821}}^1$

素因数の和:1173

約数の個数: 18

約数和(自身を含む): 321680658

約数和(自身を除く): 100535277

約数列:

[1, 3, 9, 173, 519, 821, 1557, 2463, 7389, 29929, 89787, 142033, 269361, 426099, 1278297, 24571709, 73715127, 221145381]

約数ペア:

[(1, 221145381), (3, 73715127), (9, 24571709), (173, 1278297), (519, 426099), (821, 269361), (1557, 142033), (2463, 89787), (7389, 29929)]