18388864

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 40526640

約数和(自身を除く): 22137776

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 172, 208, 257, 344, 416, 514, 559, 688, 832, 1028, 1118, 1376, 1664, 2056, 2236, 2752, 3341, 4112, 4472, 5504, 6682, 8224, 8944, 11051, 13364, 16448, 17888, 22102, 26728, 32896, 35776, 44204, 53456, 71552, 88408, 106912, 143663, 176816, 213824, 287326, 353632, 427648, 574652, 707264, 1149304, 1414528, 2298608, 4597216, 9194432, 18388864]

約数ペア:

[(1, 18388864), (2, 9194432), (4, 4597216), (8, 2298608), (13, 1414528), (16, 1149304), (26, 707264), (32, 574652), (43, 427648), (52, 353632), (64, 287326), (86, 213824), (104, 176816), (128, 143663), (172, 106912), (208, 88408), (257, 71552), (344, 53456), (416, 44204), (514, 35776), (559, 32896), (688, 26728), (832, 22102), (1028, 17888), (1118, 16448), (1376, 13364), (1664, 11051), (2056, 8944), (2236, 8224), (2752, 6682), (3341, 5504), (4112, 4472)]