20693991

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{419}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 28103040

約数和(自身を除く): 7409049

約数列:

[1, 3, 101, 163, 303, 419, 489, 1257, 16463, 42319, 49389, 68297, 126957, 204891, 6897997, 20693991]

約数ペア:

[(1, 20693991), (3, 6897997), (101, 204891), (163, 126957), (303, 68297), (419, 49389), (489, 42319), (1257, 16463)]