17879720

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2269}}^1$

素因数の和:2477

約数の個数: 32

約数和(自身を含む): 40451400

約数和(自身を除く): 22571680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2269, 3940, 4538, 7880, 9076, 11345, 18152, 22690, 45380, 90760, 446993, 893986, 1787972, 2234965, 3575944, 4469930, 8939860, 17879720]

約数ペア:

[(1, 17879720), (2, 8939860), (4, 4469930), (5, 3575944), (8, 2234965), (10, 1787972), (20, 893986), (40, 446993), (197, 90760), (394, 45380), (788, 22690), (985, 18152), (1576, 11345), (1970, 9076), (2269, 7880), (3940, 4538)]