9897640

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{709}}^1$

素因数の和:1069

約数の個数: 32

約数和(自身を含む): 22365000

約数和(自身を除く): 12467360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 709, 1396, 1418, 1745, 2792, 2836, 3490, 3545, 5672, 6980, 7090, 13960, 14180, 28360, 247441, 494882, 989764, 1237205, 1979528, 2474410, 4948820, 9897640]

約数ペア:

[(1, 9897640), (2, 4948820), (4, 2474410), (5, 1979528), (8, 1237205), (10, 989764), (20, 494882), (40, 247441), (349, 28360), (698, 14180), (709, 13960), (1396, 7090), (1418, 6980), (1745, 5672), (2792, 3545), (2836, 3490)]