20653984

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{379}}^1$

素因数の和:533

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 23587136

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 131, 208, 262, 379, 416, 524, 758, 1048, 1516, 1703, 2096, 3032, 3406, 4192, 4927, 6064, 6812, 9854, 12128, 13624, 19708, 27248, 39416, 49649, 54496, 78832, 99298, 157664, 198596, 397192, 645437, 794384, 1290874, 1588768, 2581748, 5163496, 10326992, 20653984]

約数ペア:

[(1, 20653984), (2, 10326992), (4, 5163496), (8, 2581748), (13, 1588768), (16, 1290874), (26, 794384), (32, 645437), (52, 397192), (104, 198596), (131, 157664), (208, 99298), (262, 78832), (379, 54496), (416, 49649), (524, 39416), (758, 27248), (1048, 19708), (1516, 13624), (1703, 12128), (2096, 9854), (3032, 6812), (3406, 6064), (4192, 4927)]