9996760

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{509}}^1$

素因数の和:1011

約数の個数: 32

約数和(自身を含む): 22582800

約数和(自身を除く): 12586040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 509, 982, 1018, 1964, 2036, 2455, 2545, 3928, 4072, 4910, 5090, 9820, 10180, 19640, 20360, 249919, 499838, 999676, 1249595, 1999352, 2499190, 4998380, 9996760]

約数ペア:

[(1, 9996760), (2, 4998380), (4, 2499190), (5, 1999352), (8, 1249595), (10, 999676), (20, 499838), (40, 249919), (491, 20360), (509, 19640), (982, 10180), (1018, 9820), (1964, 5090), (2036, 4910), (2455, 4072), (2545, 3928)]