20539984

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{6451}}^1$

素因数の和:6658

約数の個数: 20

約数和(自身を含む): 40002400

約数和(自身を除く): 19462416

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 6451, 12902, 25804, 51608, 103216, 1283749, 2567498, 5134996, 10269992, 20539984]

約数ペア:

[(1, 20539984), (2, 10269992), (4, 5134996), (8, 2567498), (16, 1283749), (199, 103216), (398, 51608), (796, 25804), (1592, 12902), (3184, 6451)]