20565872

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:513

約数の個数: 40

約数和(自身を含む): 41664000

約数和(自身を除く): 21098128

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 127, 232, 254, 349, 464, 508, 698, 1016, 1396, 2032, 2792, 3683, 5584, 7366, 10121, 14732, 20242, 29464, 40484, 44323, 58928, 80968, 88646, 161936, 177292, 354584, 709168, 1285367, 2570734, 5141468, 10282936, 20565872]

約数ペア:

[(1, 20565872), (2, 10282936), (4, 5141468), (8, 2570734), (16, 1285367), (29, 709168), (58, 354584), (116, 177292), (127, 161936), (232, 88646), (254, 80968), (349, 58928), (464, 44323), (508, 40484), (698, 29464), (1016, 20242), (1396, 14732), (2032, 10121), (2792, 7366), (3683, 5584)]