18704679

素因数分解:

$3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1289}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 28565760

約数和(自身を除く): 9861081

約数列:

[1, 3, 7, 21, 691, 1289, 2073, 3867, 4837, 9023, 14511, 27069, 890699, 2672097, 6234893, 18704679]

約数ペア:

[(1, 18704679), (3, 6234893), (7, 2672097), (21, 890699), (691, 27069), (1289, 14511), (2073, 9023), (3867, 4837)]