21078620

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3433}}^1$

素因数の和:3749

約数の個数: 24

約数和(自身を含む): 44422224

約数和(自身を除く): 23343604

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 3433, 6140, 6866, 13732, 17165, 34330, 68660, 1053931, 2107862, 4215724, 5269655, 10539310, 21078620]

約数ペア:

[(1, 21078620), (2, 10539310), (4, 5269655), (5, 4215724), (10, 2107862), (20, 1053931), (307, 68660), (614, 34330), (1228, 17165), (1535, 13732), (3070, 6866), (3433, 6140)]