18790480

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1217}}^1$

素因数の和:1423

約数の個数: 40

約数和(自身を含む): 43950312

約数和(自身を除く): 25159832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1217, 1544, 1930, 2434, 3088, 3860, 4868, 6085, 7720, 9736, 12170, 15440, 19472, 24340, 48680, 97360, 234881, 469762, 939524, 1174405, 1879048, 2348810, 3758096, 4697620, 9395240, 18790480]

約数ペア:

[(1, 18790480), (2, 9395240), (4, 4697620), (5, 3758096), (8, 2348810), (10, 1879048), (16, 1174405), (20, 939524), (40, 469762), (80, 234881), (193, 97360), (386, 48680), (772, 24340), (965, 19472), (1217, 15440), (1544, 12170), (1930, 9736), (2434, 7720), (3088, 6085), (3860, 4868)]