18591640

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6367}}^1$

素因数の和:6451

約数の個数: 32

約数和(自身を含む): 42410880

約数和(自身を除く): 23819240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6367, 12734, 25468, 31835, 50936, 63670, 127340, 254680, 464791, 929582, 1859164, 2323955, 3718328, 4647910, 9295820, 18591640]

約数ペア:

[(1, 18591640), (2, 9295820), (4, 4647910), (5, 3718328), (8, 2323955), (10, 1859164), (20, 929582), (40, 464791), (73, 254680), (146, 127340), (292, 63670), (365, 50936), (584, 31835), (730, 25468), (1460, 12734), (2920, 6367)]