21295456

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:204

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 31539872

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 71, 91, 103, 104, 112, 142, 182, 206, 208, 224, 284, 364, 412, 416, 497, 568, 721, 728, 824, 923, 994, 1136, 1339, 1442, 1456, 1648, 1846, 1988, 2272, 2678, 2884, 2912, 3296, 3692, 3976, 5356, 5768, 6461, 7313, 7384, 7952, 9373, 10712, 11536, 12922, 14626, 14768, 15904, 18746, 21424, 23072, 25844, 29252, 29536, 37492, 42848, 51191, 51688, 58504, 74984, 95069, 102382, 103376, 117008, 149968, 190138, 204764, 206752, 234016, 299936, 380276, 409528, 665483, 760552, 819056, 1330966, 1521104, 1638112, 2661932, 3042208, 5323864, 10647728, 21295456]

約数ペア:

[(1, 21295456), (2, 10647728), (4, 5323864), (7, 3042208), (8, 2661932), (13, 1638112), (14, 1521104), (16, 1330966), (26, 819056), (28, 760552), (32, 665483), (52, 409528), (56, 380276), (71, 299936), (91, 234016), (103, 206752), (104, 204764), (112, 190138), (142, 149968), (182, 117008), (206, 103376), (208, 102382), (224, 95069), (284, 74984), (364, 58504), (412, 51688), (416, 51191), (497, 42848), (568, 37492), (721, 29536), (728, 29252), (824, 25844), (923, 23072), (994, 21424), (1136, 18746), (1339, 15904), (1442, 14768), (1456, 14626), (1648, 12922), (1846, 11536), (1988, 10712), (2272, 9373), (2678, 7952), (2884, 7384), (2912, 7313), (3296, 6461), (3692, 5768), (3976, 5356)]