21221616

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:574

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 38774544

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 71, 78, 104, 142, 156, 208, 213, 284, 312, 426, 479, 568, 624, 852, 923, 958, 1136, 1437, 1704, 1846, 1916, 2769, 2874, 3408, 3692, 3832, 5538, 5748, 6227, 7384, 7664, 11076, 11496, 12454, 14768, 18681, 22152, 22992, 24908, 34009, 37362, 44304, 49816, 68018, 74724, 99632, 102027, 136036, 149448, 204054, 272072, 298896, 408108, 442117, 544144, 816216, 884234, 1326351, 1632432, 1768468, 2652702, 3536936, 5305404, 7073872, 10610808, 21221616]

約数ペア:

[(1, 21221616), (2, 10610808), (3, 7073872), (4, 5305404), (6, 3536936), (8, 2652702), (12, 1768468), (13, 1632432), (16, 1326351), (24, 884234), (26, 816216), (39, 544144), (48, 442117), (52, 408108), (71, 298896), (78, 272072), (104, 204054), (142, 149448), (156, 136036), (208, 102027), (213, 99632), (284, 74724), (312, 68018), (426, 49816), (479, 44304), (568, 37362), (624, 34009), (852, 24908), (923, 22992), (958, 22152), (1136, 18681), (1437, 14768), (1704, 12454), (1846, 11496), (1916, 11076), (2769, 7664), (2874, 7384), (3408, 6227), (3692, 5748), (3832, 5538)]