1397320

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 3177720

約数和(自身を除く): 1780400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 193, 362, 386, 724, 772, 905, 965, 1448, 1544, 1810, 1930, 3620, 3860, 7240, 7720, 34933, 69866, 139732, 174665, 279464, 349330, 698660, 1397320]

約数ペア:

[(1, 1397320), (2, 698660), (4, 349330), (5, 279464), (8, 174665), (10, 139732), (20, 69866), (40, 34933), (181, 7720), (193, 7240), (362, 3860), (386, 3620), (724, 1930), (772, 1810), (905, 1544), (965, 1448)]