490719999

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 843448320

約数和(自身を除く): 352728321

約数列:

[1, 3, 7, 11, 21, 33, 43, 77, 127, 129, 231, 301, 381, 389, 473, 889, 903, 1167, 1397, 1419, 2667, 2723, 3311, 4191, 4279, 5461, 8169, 9779, 9933, 12837, 16383, 16727, 29337, 29953, 38227, 49403, 50181, 60071, 89859, 114681, 117089, 148209, 180213, 183997, 345821, 351267, 420497, 543433, 551991, 1037463, 1261491, 1287979, 1630299, 2124329, 3804031, 3863937, 6372987, 11412093, 14870303, 23367619, 44610909, 70102857, 163573333, 490719999]

約数ペア:

[(1, 490719999), (3, 163573333), (7, 70102857), (11, 44610909), (21, 23367619), (33, 14870303), (43, 11412093), (77, 6372987), (127, 3863937), (129, 3804031), (231, 2124329), (301, 1630299), (381, 1287979), (389, 1261491), (473, 1037463), (889, 551991), (903, 543433), (1167, 420497), (1397, 351267), (1419, 345821), (2667, 183997), (2723, 180213), (3311, 148209), (4191, 117089), (4279, 114681), (5461, 89859), (8169, 60071), (9779, 50181), (9933, 49403), (12837, 38227), (16383, 29953), (16727, 29337)]