21563553

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13903}}^1$

素因数の和:13964

約数の個数: 16

約数和(自身を含む): 32034816

約数和(自身を除く): 10471263

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13903, 41709, 152933, 458799, 653441, 1960323, 7187851, 21563553]

約数ペア:

[(1, 21563553), (3, 7187851), (11, 1960323), (33, 653441), (47, 458799), (141, 152933), (517, 41709), (1551, 13903)]