217845

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:161

約数の個数: 24

約数和(自身を含む): 389376

約数和(自身を除く): 171531

約数列:

[1, 3, 5, 9, 15, 45, 47, 103, 141, 235, 309, 423, 515, 705, 927, 1545, 2115, 4635, 4841, 14523, 24205, 43569, 72615, 217845]

約数ペア:

[(1, 217845), (3, 72615), (5, 43569), (9, 24205), (15, 14523), (45, 4841), (47, 4635), (103, 2115), (141, 1545), (235, 927), (309, 705), (423, 515)]