17716979

素因数分解:

$7^4\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:232

約数の個数: 20

約数和(自身を含む): 21242784

約数和(自身を除く): 3525805

約数列:

[1, 7, 47, 49, 157, 329, 343, 1099, 2303, 2401, 7379, 7693, 16121, 51653, 53851, 112847, 361571, 376957, 2530997, 17716979]

約数ペア:

[(1, 17716979), (7, 2530997), (47, 376957), (49, 361571), (157, 112847), (329, 53851), (343, 51653), (1099, 16121), (2303, 7693), (2401, 7379)]