21279942

素因数分解:

$2^1\times 3^3\times {\mathrm{394073}}^1$

素因数の和:394084

約数の個数: 16

約数和(自身を含む): 47288880

約数和(自身を除く): 26008938

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394073, 788146, 1182219, 2364438, 3546657, 7093314, 10639971, 21279942]

約数ペア:

[(1, 21279942), (2, 10639971), (3, 7093314), (6, 3546657), (9, 2364438), (18, 1182219), (27, 788146), (54, 394073)]