18381320

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2381}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 41589720

約数和(自身を除く): 23208400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2381, 3860, 4762, 7720, 9524, 11905, 19048, 23810, 47620, 95240, 459533, 919066, 1838132, 2297665, 3676264, 4595330, 9190660, 18381320]

約数ペア:

[(1, 18381320), (2, 9190660), (4, 4595330), (5, 3676264), (8, 2297665), (10, 1838132), (20, 919066), (40, 459533), (193, 95240), (386, 47620), (772, 23810), (965, 19048), (1544, 11905), (1930, 9524), (2381, 7720), (3860, 4762)]