21810681

素因数分解:

$3^3\times {\mathrm{181}}^1\times {\mathrm{4463}}^1$

素因数の和:4653

約数の個数: 16

約数和(自身を含む): 32497920

約数和(自身を除く): 10687239

約数列:

[1, 3, 9, 27, 181, 543, 1629, 4463, 4887, 13389, 40167, 120501, 807803, 2423409, 7270227, 21810681]

約数ペア:

[(1, 21810681), (3, 7270227), (9, 2423409), (27, 807803), (181, 120501), (543, 40167), (1629, 13389), (4463, 4887)]