18231664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1549

約数の個数: 40

約数和(自身を含む): 39104640

約数和(自身を除く): 20872976

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1459, 1562, 2918, 3124, 5836, 6248, 11672, 12496, 16049, 23344, 32098, 64196, 103589, 128392, 207178, 256784, 414356, 828712, 1139479, 1657424, 2278958, 4557916, 9115832, 18231664]

約数ペア:

[(1, 18231664), (2, 9115832), (4, 4557916), (8, 2278958), (11, 1657424), (16, 1139479), (22, 828712), (44, 414356), (71, 256784), (88, 207178), (142, 128392), (176, 103589), (284, 64196), (568, 32098), (781, 23344), (1136, 16049), (1459, 12496), (1562, 11672), (2918, 6248), (3124, 5836)]