20931858

素因数分解:

$2^1\times 3^4\times {\mathrm{129209}}^1$

素因数の和:129223

約数の個数: 20

約数和(自身を含む): 46903230

約数和(自身を除く): 25971372

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 129209, 258418, 387627, 775254, 1162881, 2325762, 3488643, 6977286, 10465929, 20931858]

約数ペア:

[(1, 20931858), (2, 10465929), (3, 6977286), (6, 3488643), (9, 2325762), (18, 1162881), (27, 775254), (54, 387627), (81, 258418), (162, 129209)]