631240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 1457280

約数和(自身を除く): 826040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 367, 430, 734, 860, 1468, 1720, 1835, 2936, 3670, 7340, 14680, 15781, 31562, 63124, 78905, 126248, 157810, 315620, 631240]

約数ペア:

[(1, 631240), (2, 315620), (4, 157810), (5, 126248), (8, 78905), (10, 63124), (20, 31562), (40, 15781), (43, 14680), (86, 7340), (172, 3670), (215, 2936), (344, 1835), (367, 1720), (430, 1468), (734, 860)]