18919269

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 30750720

約数和(自身を除く): 11831451

約数列:

[1, 3, 9, 19, 31, 43, 57, 83, 93, 129, 171, 249, 279, 387, 589, 747, 817, 1333, 1577, 1767, 2451, 2573, 3569, 3999, 4731, 5301, 7353, 7719, 10707, 11997, 14193, 23157, 25327, 32121, 48887, 67811, 75981, 110639, 146661, 203433, 227943, 331917, 439983, 610299, 995751, 2102141, 6306423, 18919269]

約数ペア:

[(1, 18919269), (3, 6306423), (9, 2102141), (19, 995751), (31, 610299), (43, 439983), (57, 331917), (83, 227943), (93, 203433), (129, 146661), (171, 110639), (249, 75981), (279, 67811), (387, 48887), (589, 32121), (747, 25327), (817, 23157), (1333, 14193), (1577, 11997), (1767, 10707), (2451, 7719), (2573, 7353), (3569, 5301), (3999, 4731)]