21013168

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 27198032

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 29, 44, 46, 58, 88, 92, 116, 176, 179, 184, 232, 253, 319, 358, 368, 464, 506, 638, 667, 716, 1012, 1276, 1334, 1432, 1969, 2024, 2552, 2668, 2864, 3938, 4048, 4117, 5104, 5191, 5336, 7337, 7876, 8234, 10382, 10672, 14674, 15752, 16468, 20764, 29348, 31504, 32936, 41528, 45287, 57101, 58696, 65872, 83056, 90574, 114202, 117392, 119393, 181148, 228404, 238786, 362296, 456808, 477572, 724592, 913616, 955144, 1313323, 1910288, 2626646, 5253292, 10506584, 21013168]

約数ペア:

[(1, 21013168), (2, 10506584), (4, 5253292), (8, 2626646), (11, 1910288), (16, 1313323), (22, 955144), (23, 913616), (29, 724592), (44, 477572), (46, 456808), (58, 362296), (88, 238786), (92, 228404), (116, 181148), (176, 119393), (179, 117392), (184, 114202), (232, 90574), (253, 83056), (319, 65872), (358, 58696), (368, 57101), (464, 45287), (506, 41528), (638, 32936), (667, 31504), (716, 29348), (1012, 20764), (1276, 16468), (1334, 15752), (1432, 14674), (1969, 10672), (2024, 10382), (2552, 8234), (2668, 7876), (2864, 7337), (3938, 5336), (4048, 5191), (4117, 5104)]