20821516

素因数分解:

$2^2\times {\mathrm{181}}^1\times {\mathrm{28759}}^1$

素因数の和:28944

約数の個数: 12

約数和(自身を含む): 36640240

約数和(自身を除く): 15818724

約数列:

[1, 2, 4, 181, 362, 724, 28759, 57518, 115036, 5205379, 10410758, 20821516]

約数ペア:

[(1, 20821516), (2, 10410758), (4, 5205379), (181, 115036), (362, 57518), (724, 28759)]