20469939

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13729}}^1$

素因数の和:13810

約数の個数: 16

約数和(自身を含む): 31633920

約数和(自身を除く): 11163981

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13729, 41187, 96103, 288309, 974759, 2924277, 6823313, 20469939]

約数ペア:

[(1, 20469939), (3, 6823313), (7, 2924277), (21, 974759), (71, 288309), (213, 96103), (497, 41187), (1491, 13729)]