28485807

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:121

約数の個数: 64

約数和(自身を含む): 49152000

約数和(自身を除く): 20666193

約数列:

[1, 3, 7, 19, 21, 31, 47, 49, 57, 93, 133, 141, 147, 217, 329, 343, 399, 589, 651, 893, 931, 987, 1029, 1457, 1519, 1767, 2303, 2679, 2793, 4123, 4371, 4557, 6251, 6517, 6909, 10199, 10633, 12369, 16121, 18753, 19551, 27683, 28861, 30597, 31899, 43757, 48363, 71393, 83049, 86583, 131271, 193781, 202027, 214179, 306299, 499751, 581343, 606081, 918897, 1356467, 1499253, 4069401, 9495269, 28485807]

約数ペア:

[(1, 28485807), (3, 9495269), (7, 4069401), (19, 1499253), (21, 1356467), (31, 918897), (47, 606081), (49, 581343), (57, 499751), (93, 306299), (133, 214179), (141, 202027), (147, 193781), (217, 131271), (329, 86583), (343, 83049), (399, 71393), (589, 48363), (651, 43757), (893, 31899), (931, 30597), (987, 28861), (1029, 27683), (1457, 19551), (1519, 18753), (1767, 16121), (2303, 12369), (2679, 10633), (2793, 10199), (4123, 6909), (4371, 6517), (4557, 6251)]