28664559

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:361

約数の個数: 72

約数和(自身を含む): 55486080

約数和(自身を除く): 26821521

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 49, 57, 63, 77, 99, 133, 147, 171, 209, 231, 311, 399, 441, 539, 627, 693, 931, 933, 1197, 1463, 1617, 1881, 2177, 2793, 2799, 3421, 4389, 4851, 5909, 6531, 8379, 10241, 10263, 13167, 15239, 17727, 19593, 23947, 30723, 30789, 41363, 45717, 53181, 64999, 71841, 92169, 124089, 137151, 167629, 194997, 215523, 289541, 372267, 454993, 502887, 584991, 868623, 1364979, 1508661, 2605869, 3184951, 4094937, 9554853, 28664559]

約数ペア:

[(1, 28664559), (3, 9554853), (7, 4094937), (9, 3184951), (11, 2605869), (19, 1508661), (21, 1364979), (33, 868623), (49, 584991), (57, 502887), (63, 454993), (77, 372267), (99, 289541), (133, 215523), (147, 194997), (171, 167629), (209, 137151), (231, 124089), (311, 92169), (399, 71841), (441, 64999), (539, 53181), (627, 45717), (693, 41363), (931, 30789), (933, 30723), (1197, 23947), (1463, 19593), (1617, 17727), (1881, 15239), (2177, 13167), (2793, 10263), (2799, 10241), (3421, 8379), (4389, 6531), (4851, 5909)]