21812336

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:310

約数の個数: 80

約数和(自身を含む): 52996608

約数和(自身を除く): 31184272

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 71, 91, 104, 112, 142, 182, 208, 211, 284, 364, 422, 497, 568, 728, 844, 923, 994, 1136, 1456, 1477, 1688, 1846, 1988, 2743, 2954, 3376, 3692, 3976, 5486, 5908, 6461, 7384, 7952, 10972, 11816, 12922, 14768, 14981, 19201, 21944, 23632, 25844, 29962, 38402, 43888, 51688, 59924, 76804, 103376, 104867, 119848, 153608, 194753, 209734, 239696, 307216, 389506, 419468, 779012, 838936, 1363271, 1558024, 1677872, 2726542, 3116048, 5453084, 10906168, 21812336]

約数ペア:

[(1, 21812336), (2, 10906168), (4, 5453084), (7, 3116048), (8, 2726542), (13, 1677872), (14, 1558024), (16, 1363271), (26, 838936), (28, 779012), (52, 419468), (56, 389506), (71, 307216), (91, 239696), (104, 209734), (112, 194753), (142, 153608), (182, 119848), (208, 104867), (211, 103376), (284, 76804), (364, 59924), (422, 51688), (497, 43888), (568, 38402), (728, 29962), (844, 25844), (923, 23632), (994, 21944), (1136, 19201), (1456, 14981), (1477, 14768), (1688, 12922), (1846, 11816), (1988, 10972), (2743, 7952), (2954, 7384), (3376, 6461), (3692, 5908), (3976, 5486)]