18104905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{39791}}^1$

素因数の和:39816

約数の個数: 16

約数和(自身を含む): 26740224

約数和(自身を除く): 8635319

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 39791, 198955, 278537, 517283, 1392685, 2586415, 3620981, 18104905]

約数ペア:

[(1, 18104905), (5, 3620981), (7, 2586415), (13, 1392685), (35, 517283), (65, 278537), (91, 198955), (455, 39791)]