13991240

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3209}}^1$

素因数の和:3329

約数の個数: 32

約数和(自身を含む): 31779000

約数和(自身を除く): 17787760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 3209, 4360, 6418, 12836, 16045, 25672, 32090, 64180, 128360, 349781, 699562, 1399124, 1748905, 2798248, 3497810, 6995620, 13991240]

約数ペア:

[(1, 13991240), (2, 6995620), (4, 3497810), (5, 2798248), (8, 1748905), (10, 1399124), (20, 699562), (40, 349781), (109, 128360), (218, 64180), (436, 32090), (545, 25672), (872, 16045), (1090, 12836), (2180, 6418), (3209, 4360)]