21836245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8287}}^1$

素因数の和:8340

約数の個数: 16

約数和(自身を含む): 28643328

約数和(自身を除く): 6807083

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8287, 41435, 140879, 256897, 704395, 1284485, 4367249, 21836245]

約数ペア:

[(1, 21836245), (5, 4367249), (17, 1284485), (31, 704395), (85, 256897), (155, 140879), (527, 41435), (2635, 8287)]