8780260

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{991}}^1$

素因数の和:1443

約数の個数: 24

約数和(自身を含む): 18498816

約数和(自身を除く): 9718556

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 991, 1772, 1982, 2215, 3964, 4430, 4955, 8860, 9910, 19820, 439013, 878026, 1756052, 2195065, 4390130, 8780260]

約数ペア:

[(1, 8780260), (2, 4390130), (4, 2195065), (5, 1756052), (10, 878026), (20, 439013), (443, 19820), (886, 9910), (991, 8860), (1772, 4955), (1982, 4430), (2215, 3964)]