18582320

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2131}}^1$

素因数の和:2253

約数の個数: 40

約数和(自身を含む): 43620720

約数和(自身を除く): 25038400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2131, 2180, 4262, 4360, 8524, 8720, 10655, 17048, 21310, 34096, 42620, 85240, 170480, 232279, 464558, 929116, 1161395, 1858232, 2322790, 3716464, 4645580, 9291160, 18582320]

約数ペア:

[(1, 18582320), (2, 9291160), (4, 4645580), (5, 3716464), (8, 2322790), (10, 1858232), (16, 1161395), (20, 929116), (40, 464558), (80, 232279), (109, 170480), (218, 85240), (436, 42620), (545, 34096), (872, 21310), (1090, 17048), (1744, 10655), (2131, 8720), (2180, 8524), (4262, 4360)]