21219156

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{523}}^1$

素因数の和:570

約数の個数: 108

約数和(自身を含む): 65231712

約数和(自身を除く): 44012556

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 28, 36, 42, 46, 49, 63, 69, 84, 92, 98, 126, 138, 147, 161, 196, 207, 252, 276, 294, 322, 414, 441, 483, 523, 588, 644, 828, 882, 966, 1046, 1127, 1449, 1569, 1764, 1932, 2092, 2254, 2898, 3138, 3381, 3661, 4508, 4707, 5796, 6276, 6762, 7322, 9414, 10143, 10983, 12029, 13524, 14644, 18828, 20286, 21966, 24058, 25627, 32949, 36087, 40572, 43932, 48116, 51254, 65898, 72174, 76881, 84203, 102508, 108261, 131796, 144348, 153762, 168406, 216522, 230643, 252609, 307524, 336812, 433044, 461286, 505218, 589421, 757827, 922572, 1010436, 1178842, 1515654, 1768263, 2357684, 3031308, 3536526, 5304789, 7073052, 10609578, 21219156]

約数ペア:

[(1, 21219156), (2, 10609578), (3, 7073052), (4, 5304789), (6, 3536526), (7, 3031308), (9, 2357684), (12, 1768263), (14, 1515654), (18, 1178842), (21, 1010436), (23, 922572), (28, 757827), (36, 589421), (42, 505218), (46, 461286), (49, 433044), (63, 336812), (69, 307524), (84, 252609), (92, 230643), (98, 216522), (126, 168406), (138, 153762), (147, 144348), (161, 131796), (196, 108261), (207, 102508), (252, 84203), (276, 76881), (294, 72174), (322, 65898), (414, 51254), (441, 48116), (483, 43932), (523, 40572), (588, 36087), (644, 32949), (828, 25627), (882, 24058), (966, 21966), (1046, 20286), (1127, 18828), (1449, 14644), (1569, 13524), (1764, 12029), (1932, 10983), (2092, 10143), (2254, 9414), (2898, 7322), (3138, 6762), (3381, 6276), (3661, 5796), (4508, 4707)]