21418218

素因数分解:

$2^1\times 3^2\times {\mathrm{1189901}}^1$

素因数の和:1189909

約数の個数: 12

約数和(自身を含む): 46406178

約数和(自身を除く): 24987960

約数列:

[1, 2, 3, 6, 9, 18, 1189901, 2379802, 3569703, 7139406, 10709109, 21418218]

約数ペア:

[(1, 21418218), (2, 10709109), (3, 7139406), (6, 3569703), (9, 2379802), (18, 1189901)]