21391266

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1973}}^1$

素因数の和:2130

約数の個数: 32

約数和(自身を含む): 46428480

約数和(自身を除く): 25037214

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 139, 278, 417, 834, 1807, 1973, 3614, 3946, 5421, 5919, 10842, 11838, 25649, 51298, 76947, 153894, 274247, 548494, 822741, 1645482, 3565211, 7130422, 10695633, 21391266]

約数ペア:

[(1, 21391266), (2, 10695633), (3, 7130422), (6, 3565211), (13, 1645482), (26, 822741), (39, 548494), (78, 274247), (139, 153894), (278, 76947), (417, 51298), (834, 25649), (1807, 11838), (1973, 10842), (3614, 5919), (3946, 5421)]