21656656

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10177}}^1$

素因数の和:10211

約数の個数: 40

約数和(自身を含む): 50482880

約数和(自身を除く): 28826224

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 10177, 20354, 40708, 71239, 81416, 142478, 162832, 193363, 284956, 386726, 569912, 773452, 1139824, 1353541, 1546904, 2707082, 3093808, 5414164, 10828328, 21656656]

約数ペア:

[(1, 21656656), (2, 10828328), (4, 5414164), (7, 3093808), (8, 2707082), (14, 1546904), (16, 1353541), (19, 1139824), (28, 773452), (38, 569912), (56, 386726), (76, 284956), (112, 193363), (133, 162832), (152, 142478), (266, 81416), (304, 71239), (532, 40708), (1064, 20354), (2128, 10177)]