87210081

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 153538560

約数和(自身を除く): 66328479

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 71, 97, 189, 201, 213, 291, 469, 497, 603, 639, 679, 873, 1407, 1491, 1809, 1917, 2037, 2619, 4221, 4473, 4757, 6111, 6499, 6887, 12663, 13419, 14271, 18333, 19497, 20661, 33299, 42813, 45493, 48209, 58491, 61983, 99897, 128439, 136479, 144627, 175473, 185949, 299691, 409437, 433881, 461429, 899073, 1228311, 1301643, 1384287, 3230003, 4152861, 9690009, 12458583, 29070027, 87210081]

約数ペア:

[(1, 87210081), (3, 29070027), (7, 12458583), (9, 9690009), (21, 4152861), (27, 3230003), (63, 1384287), (67, 1301643), (71, 1228311), (97, 899073), (189, 461429), (201, 433881), (213, 409437), (291, 299691), (469, 185949), (497, 175473), (603, 144627), (639, 136479), (679, 128439), (873, 99897), (1407, 61983), (1491, 58491), (1809, 48209), (1917, 45493), (2037, 42813), (2619, 33299), (4221, 20661), (4473, 19497), (4757, 18333), (6111, 14271), (6499, 13419), (6887, 12663)]