20921019

素因数分解:

$3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{2029}}^1$

素因数の和:2530

約数の個数: 16

約数和(自身を含む): 31960320

約数和(自身を除く): 11039301

約数列:

[1, 3, 7, 21, 491, 1473, 2029, 3437, 6087, 10311, 14203, 42609, 996239, 2988717, 6973673, 20921019]

約数ペア:

[(1, 20921019), (3, 6973673), (7, 2988717), (21, 996239), (491, 42609), (1473, 14203), (2029, 10311), (3437, 6087)]