20981462

素因数分解:

$2^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1\times {\mathrm{661}}^1$

素因数の和:991

約数の個数: 16

約数和(自身を含む): 32173200

約数和(自身を除く): 11191738

約数列:

[1, 2, 59, 118, 269, 538, 661, 1322, 15871, 31742, 38999, 77998, 177809, 355618, 10490731, 20981462]

約数ペア:

[(1, 20981462), (2, 10490731), (59, 355618), (118, 177809), (269, 77998), (538, 38999), (661, 31742), (1322, 15871)]