28163187

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 48921600

約数和(自身を除く): 20758413

約数列:

[1, 3, 9, 13, 19, 27, 39, 41, 57, 103, 117, 123, 171, 247, 309, 351, 369, 513, 533, 741, 779, 927, 1107, 1339, 1599, 1957, 2223, 2337, 2781, 4017, 4223, 4797, 5871, 6669, 7011, 10127, 12051, 12669, 14391, 17613, 21033, 25441, 30381, 36153, 38007, 52839, 54899, 76323, 80237, 91143, 114021, 164697, 228969, 240711, 273429, 494091, 686907, 722133, 1043081, 1482273, 2166399, 3129243, 9387729, 28163187]

約数ペア:

[(1, 28163187), (3, 9387729), (9, 3129243), (13, 2166399), (19, 1482273), (27, 1043081), (39, 722133), (41, 686907), (57, 494091), (103, 273429), (117, 240711), (123, 228969), (171, 164697), (247, 114021), (309, 91143), (351, 80237), (369, 76323), (513, 54899), (533, 52839), (741, 38007), (779, 36153), (927, 30381), (1107, 25441), (1339, 21033), (1599, 17613), (1957, 14391), (2223, 12669), (2337, 12051), (2781, 10127), (4017, 7011), (4223, 6669), (4797, 5871)]