21000654

素因数分解:

$2^1\times 3^3\times {\mathrm{388901}}^1$

素因数の和:388912

約数の個数: 16

約数和(自身を含む): 46668240

約数和(自身を除く): 25667586

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 388901, 777802, 1166703, 2333406, 3500109, 7000218, 10500327, 21000654]

約数ペア:

[(1, 21000654), (2, 10500327), (3, 7000218), (6, 3500109), (9, 2333406), (18, 1166703), (27, 777802), (54, 388901)]