18171088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{439}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 38192000

約数和(自身を除く): 20020912

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 199, 208, 398, 439, 796, 878, 1592, 1756, 2587, 3184, 3512, 5174, 5707, 7024, 10348, 11414, 20696, 22828, 41392, 45656, 87361, 91312, 174722, 349444, 698888, 1135693, 1397776, 2271386, 4542772, 9085544, 18171088]

約数ペア:

[(1, 18171088), (2, 9085544), (4, 4542772), (8, 2271386), (13, 1397776), (16, 1135693), (26, 698888), (52, 349444), (104, 174722), (199, 91312), (208, 87361), (398, 45656), (439, 41392), (796, 22828), (878, 20696), (1592, 11414), (1756, 10348), (2587, 7024), (3184, 5707), (3512, 5174)]