80029780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56359}}^1$

素因数の和:56439

約数の個数: 24

約数和(自身を含む): 170432640

約数和(自身を除く): 90402860

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56359, 112718, 225436, 281795, 563590, 1127180, 4001489, 8002978, 16005956, 20007445, 40014890, 80029780]

約数ペア:

[(1, 80029780), (2, 40014890), (4, 20007445), (5, 16005956), (10, 8002978), (20, 4001489), (71, 1127180), (142, 563590), (284, 281795), (355, 225436), (710, 112718), (1420, 56359)]