18818864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1677

約数の個数: 40

約数和(自身を含む): 39528720

約数和(自身を除く): 20709856

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 1609, 2924, 3218, 5848, 6436, 11696, 12872, 25744, 27353, 54706, 69187, 109412, 138374, 218824, 276748, 437648, 553496, 1106992, 1176179, 2352358, 4704716, 9409432, 18818864]

約数ペア:

[(1, 18818864), (2, 9409432), (4, 4704716), (8, 2352358), (16, 1176179), (17, 1106992), (34, 553496), (43, 437648), (68, 276748), (86, 218824), (136, 138374), (172, 109412), (272, 69187), (344, 54706), (688, 27353), (731, 25744), (1462, 12872), (1609, 11696), (2924, 6436), (3218, 5848)]