21369866

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^2\times {\mathrm{691}}^1$

素因数の和:794

約数の個数: 24

約数和(自身を含む): 37484256

約数和(自身を除く): 16114390

約数列:

[1, 2, 7, 14, 47, 94, 329, 658, 691, 1382, 2209, 4418, 4837, 9674, 15463, 30926, 32477, 64954, 227339, 454678, 1526419, 3052838, 10684933, 21369866]

約数ペア:

[(1, 21369866), (2, 10684933), (7, 3052838), (14, 1526419), (47, 454678), (94, 227339), (329, 64954), (658, 32477), (691, 30926), (1382, 15463), (2209, 9674), (4418, 4837)]