21131416

素因数分解:

$2^3\times {\mathrm{811}}^1\times {\mathrm{3257}}^1$

素因数の和:4074

約数の個数: 16

約数和(自身を含む): 39682440

約数和(自身を除く): 18551024

約数列:

[1, 2, 4, 8, 811, 1622, 3244, 3257, 6488, 6514, 13028, 26056, 2641427, 5282854, 10565708, 21131416]

約数ペア:

[(1, 21131416), (2, 10565708), (4, 5282854), (8, 2641427), (811, 26056), (1622, 13028), (3244, 6514), (3257, 6488)]