21491834

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{449}}^1$

素因数の和:734

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18424966

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 263, 449, 526, 898, 1841, 3143, 3419, 3682, 5837, 6286, 6838, 11674, 23933, 40859, 47866, 81718, 118087, 236174, 826609, 1535131, 1653218, 3070262, 10745917, 21491834]

約数ペア:

[(1, 21491834), (2, 10745917), (7, 3070262), (13, 1653218), (14, 1535131), (26, 826609), (91, 236174), (182, 118087), (263, 81718), (449, 47866), (526, 40859), (898, 23933), (1841, 11674), (3143, 6838), (3419, 6286), (3682, 5837)]