81857853

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:175

約数の個数: 96

約数和(自身を含む): 156828672

約数和(自身を除く): 74970819

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 43, 63, 67, 77, 99, 123, 129, 201, 231, 287, 301, 369, 387, 451, 469, 473, 603, 693, 737, 861, 903, 1353, 1407, 1419, 1763, 2211, 2583, 2709, 2747, 2881, 3157, 3311, 4059, 4221, 4257, 5159, 5289, 6633, 8241, 8643, 9471, 9933, 12341, 15477, 15867, 19229, 19393, 20167, 24723, 25929, 28413, 29799, 30217, 31691, 37023, 46431, 57687, 58179, 60501, 90651, 95073, 111069, 118121, 135751, 173061, 174537, 181503, 211519, 221837, 271953, 285219, 354363, 407253, 634557, 665511, 826847, 1063089, 1221759, 1299331, 1903671, 1996533, 2480541, 3897993, 7441623, 9095317, 11693979, 27285951, 81857853]

約数ペア:

[(1, 81857853), (3, 27285951), (7, 11693979), (9, 9095317), (11, 7441623), (21, 3897993), (33, 2480541), (41, 1996533), (43, 1903671), (63, 1299331), (67, 1221759), (77, 1063089), (99, 826847), (123, 665511), (129, 634557), (201, 407253), (231, 354363), (287, 285219), (301, 271953), (369, 221837), (387, 211519), (451, 181503), (469, 174537), (473, 173061), (603, 135751), (693, 118121), (737, 111069), (861, 95073), (903, 90651), (1353, 60501), (1407, 58179), (1419, 57687), (1763, 46431), (2211, 37023), (2583, 31691), (2709, 30217), (2747, 29799), (2881, 28413), (3157, 25929), (3311, 24723), (4059, 20167), (4221, 19393), (4257, 19229), (5159, 15867), (5289, 15477), (6633, 12341), (8241, 9933), (8643, 9471)]