217206717

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18503}}^1$

素因数の和:18569

約数の個数: 32

約数和(自身を含む): 364750848

約数和(自身を除く): 147544131

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 11739, 18503, 55509, 129521, 240539, 388563, 721617, 795629, 1683773, 2386887, 5051319, 5569403, 10343177, 16708209, 31029531, 72402239, 217206717]

約数ペア:

[(1, 217206717), (3, 72402239), (7, 31029531), (13, 16708209), (21, 10343177), (39, 5569403), (43, 5051319), (91, 2386887), (129, 1683773), (273, 795629), (301, 721617), (559, 388563), (903, 240539), (1677, 129521), (3913, 55509), (11739, 18503)]