21485086

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2\times {\mathrm{59}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 40521600

約数和(自身を除く): 19036514

約数列:

[1, 2, 7, 14, 19, 37, 38, 59, 74, 118, 133, 259, 266, 413, 518, 703, 826, 1121, 1369, 1406, 2183, 2242, 2738, 4366, 4921, 7847, 9583, 9842, 15281, 15694, 19166, 26011, 30562, 41477, 52022, 80771, 82954, 161542, 182077, 290339, 364154, 565397, 580678, 1130794, 1534649, 3069298, 10742543, 21485086]

約数ペア:

[(1, 21485086), (2, 10742543), (7, 3069298), (14, 1534649), (19, 1130794), (37, 580678), (38, 565397), (59, 364154), (74, 290339), (118, 182077), (133, 161542), (259, 82954), (266, 80771), (413, 52022), (518, 41477), (703, 30562), (826, 26011), (1121, 19166), (1369, 15694), (1406, 15281), (2183, 9842), (2242, 9583), (2738, 7847), (4366, 4921)]