27960723

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 51217920

約数和(自身を除く): 23257197

約数列:

[1, 3, 7, 9, 19, 21, 47, 49, 57, 63, 71, 133, 141, 147, 171, 213, 329, 399, 423, 441, 497, 639, 893, 931, 987, 1197, 1349, 1491, 2303, 2679, 2793, 2961, 3337, 3479, 4047, 4473, 6251, 6909, 8037, 8379, 9443, 10011, 10437, 12141, 18753, 20727, 23359, 28329, 30033, 31311, 43757, 56259, 63403, 66101, 70077, 84987, 131271, 163513, 190209, 198303, 210231, 393813, 443821, 490539, 570627, 594909, 1331463, 1471617, 3106747, 3994389, 9320241, 27960723]

約数ペア:

[(1, 27960723), (3, 9320241), (7, 3994389), (9, 3106747), (19, 1471617), (21, 1331463), (47, 594909), (49, 570627), (57, 490539), (63, 443821), (71, 393813), (133, 210231), (141, 198303), (147, 190209), (171, 163513), (213, 131271), (329, 84987), (399, 70077), (423, 66101), (441, 63403), (497, 56259), (639, 43757), (893, 31311), (931, 30033), (987, 28329), (1197, 23359), (1349, 20727), (1491, 18753), (2303, 12141), (2679, 10437), (2793, 10011), (2961, 9443), (3337, 8379), (3479, 8037), (4047, 6909), (4473, 6251)]