39921427

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1320

約数の個数: 20

約数和(自身を含む): 50193920

約数和(自身を除く): 10272493

約数列:

[1, 7, 13, 49, 91, 343, 637, 1279, 2401, 4459, 8953, 16627, 31213, 62671, 116389, 438697, 814723, 3070879, 5703061, 39921427]

約数ペア:

[(1, 39921427), (7, 5703061), (13, 3070879), (49, 814723), (91, 438697), (343, 116389), (637, 62671), (1279, 31213), (2401, 16627), (4459, 8953)]