21918654

素因数分解:

$2^1\times 3^3\times {\mathrm{405901}}^1$

素因数の和:405912

約数の個数: 16

約数和(自身を含む): 48708240

約数和(自身を除く): 26789586

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 405901, 811802, 1217703, 2435406, 3653109, 7306218, 10959327, 21918654]

約数ペア:

[(1, 21918654), (2, 10959327), (3, 7306218), (6, 3653109), (9, 2435406), (18, 1217703), (27, 811802), (54, 405901)]