19795280

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{709}}^1$

素因数の和:1071

約数の個数: 40

約数和(自身を含む): 46221000

約数和(自身を除く): 26425720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 709, 1396, 1418, 1745, 2792, 2836, 3490, 3545, 5584, 5672, 6980, 7090, 11344, 13960, 14180, 27920, 28360, 56720, 247441, 494882, 989764, 1237205, 1979528, 2474410, 3959056, 4948820, 9897640, 19795280]

約数ペア:

[(1, 19795280), (2, 9897640), (4, 4948820), (5, 3959056), (8, 2474410), (10, 1979528), (16, 1237205), (20, 989764), (40, 494882), (80, 247441), (349, 56720), (698, 28360), (709, 27920), (1396, 14180), (1418, 13960), (1745, 11344), (2792, 7090), (2836, 6980), (3490, 5672), (3545, 5584)]