18117215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{613}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 22811328

約数和(自身を除く): 4694113

約数列:

[1, 5, 23, 115, 257, 613, 1285, 3065, 5911, 14099, 29555, 70495, 157541, 787705, 3623443, 18117215]

約数ペア:

[(1, 18117215), (5, 3623443), (23, 787705), (115, 157541), (257, 70495), (613, 29555), (1285, 14099), (3065, 5911)]