21507981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{34303}}^1$

素因数の和:34336

約数の個数: 16

約数和(自身を含む): 32931840

約数和(自身を除く): 11423859

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 34303, 102909, 377333, 651757, 1131999, 1955271, 7169327, 21507981]

約数ペア:

[(1, 21507981), (3, 7169327), (11, 1955271), (19, 1131999), (33, 651757), (57, 377333), (209, 102909), (627, 34303)]