20786528

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1307}}^1$

素因数の和:1395

約数の個数: 48

約数和(自身を含む): 47464704

約数和(自身を除く): 26678176

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1307, 1988, 2272, 2614, 3976, 5228, 7952, 9149, 10456, 15904, 18298, 20912, 36596, 41824, 73192, 92797, 146384, 185594, 292768, 371188, 649579, 742376, 1299158, 1484752, 2598316, 2969504, 5196632, 10393264, 20786528]

約数ペア:

[(1, 20786528), (2, 10393264), (4, 5196632), (7, 2969504), (8, 2598316), (14, 1484752), (16, 1299158), (28, 742376), (32, 649579), (56, 371188), (71, 292768), (112, 185594), (142, 146384), (224, 92797), (284, 73192), (497, 41824), (568, 36596), (994, 20912), (1136, 18298), (1307, 15904), (1988, 10456), (2272, 9149), (2614, 7952), (3976, 5228)]