20638510

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{121403}}^1$

素因数の和:121427

約数の個数: 16

約数和(自身を含む): 39334896

約数和(自身を除く): 18696386

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 121403, 242806, 607015, 1214030, 2063851, 4127702, 10319255, 20638510]

約数ペア:

[(1, 20638510), (2, 10319255), (5, 4127702), (10, 2063851), (17, 1214030), (34, 607015), (85, 242806), (170, 121403)]