28748349

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 52640640

約数和(自身を除く): 23892291

約数列:

[1, 3, 7, 9, 19, 21, 47, 49, 57, 63, 73, 133, 141, 147, 171, 219, 329, 399, 423, 441, 511, 657, 893, 931, 987, 1197, 1387, 1533, 2303, 2679, 2793, 2961, 3431, 3577, 4161, 4599, 6251, 6909, 8037, 8379, 9709, 10293, 10731, 12483, 18753, 20727, 24017, 29127, 30879, 32193, 43757, 56259, 65189, 67963, 72051, 87381, 131271, 168119, 195567, 203889, 216153, 393813, 456323, 504357, 586701, 611667, 1368969, 1513071, 3194261, 4106907, 9582783, 28748349]

約数ペア:

[(1, 28748349), (3, 9582783), (7, 4106907), (9, 3194261), (19, 1513071), (21, 1368969), (47, 611667), (49, 586701), (57, 504357), (63, 456323), (73, 393813), (133, 216153), (141, 203889), (147, 195567), (171, 168119), (219, 131271), (329, 87381), (399, 72051), (423, 67963), (441, 65189), (511, 56259), (657, 43757), (893, 32193), (931, 30879), (987, 29127), (1197, 24017), (1387, 20727), (1533, 18753), (2303, 12483), (2679, 10731), (2793, 10293), (2961, 9709), (3431, 8379), (3577, 8037), (4161, 6909), (4599, 6251)]