21353416

素因数分解:

$2^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 50889600

約数和(自身を除く): 29536184

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 47, 49, 56, 61, 76, 94, 98, 122, 133, 152, 188, 196, 244, 266, 329, 376, 392, 427, 488, 532, 658, 854, 893, 931, 1064, 1159, 1316, 1708, 1786, 1862, 2303, 2318, 2632, 2867, 2989, 3416, 3572, 3724, 4606, 4636, 5734, 5978, 6251, 7144, 7448, 8113, 9212, 9272, 11468, 11956, 12502, 16226, 18424, 20069, 22936, 23912, 25004, 32452, 40138, 43757, 50008, 54473, 56791, 64904, 80276, 87514, 108946, 113582, 140483, 160552, 175028, 217892, 227164, 280966, 350056, 381311, 435784, 454328, 561932, 762622, 1123864, 1525244, 2669177, 3050488, 5338354, 10676708, 21353416]

約数ペア:

[(1, 21353416), (2, 10676708), (4, 5338354), (7, 3050488), (8, 2669177), (14, 1525244), (19, 1123864), (28, 762622), (38, 561932), (47, 454328), (49, 435784), (56, 381311), (61, 350056), (76, 280966), (94, 227164), (98, 217892), (122, 175028), (133, 160552), (152, 140483), (188, 113582), (196, 108946), (244, 87514), (266, 80276), (329, 64904), (376, 56791), (392, 54473), (427, 50008), (488, 43757), (532, 40138), (658, 32452), (854, 25004), (893, 23912), (931, 22936), (1064, 20069), (1159, 18424), (1316, 16226), (1708, 12502), (1786, 11956), (1862, 11468), (2303, 9272), (2318, 9212), (2632, 8113), (2867, 7448), (2989, 7144), (3416, 6251), (3572, 5978), (3724, 5734), (4606, 4636)]