12947560

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 30481920

約数和(自身を除く): 17534360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 97, 142, 188, 194, 235, 284, 355, 376, 388, 470, 485, 568, 710, 776, 940, 970, 1420, 1880, 1940, 2840, 3337, 3880, 4559, 6674, 6887, 9118, 13348, 13774, 16685, 18236, 22795, 26696, 27548, 33370, 34435, 36472, 45590, 55096, 66740, 68870, 91180, 133480, 137740, 182360, 275480, 323689, 647378, 1294756, 1618445, 2589512, 3236890, 6473780, 12947560]

約数ペア:

[(1, 12947560), (2, 6473780), (4, 3236890), (5, 2589512), (8, 1618445), (10, 1294756), (20, 647378), (40, 323689), (47, 275480), (71, 182360), (94, 137740), (97, 133480), (142, 91180), (188, 68870), (194, 66740), (235, 55096), (284, 45590), (355, 36472), (376, 34435), (388, 33370), (470, 27548), (485, 26696), (568, 22795), (710, 18236), (776, 16685), (940, 13774), (970, 13348), (1420, 9118), (1880, 6887), (1940, 6674), (2840, 4559), (3337, 3880)]