217900816

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{102397}}^1$

素因数の和:102431

約数の個数: 40

約数和(自身を含む): 507894080

約数和(自身を除く): 289993264

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 102397, 204794, 409588, 716779, 819176, 1433558, 1638352, 1945543, 2867116, 3891086, 5734232, 7782172, 11468464, 13618801, 15564344, 27237602, 31128688, 54475204, 108950408, 217900816]

約数ペア:

[(1, 217900816), (2, 108950408), (4, 54475204), (7, 31128688), (8, 27237602), (14, 15564344), (16, 13618801), (19, 11468464), (28, 7782172), (38, 5734232), (56, 3891086), (76, 2867116), (112, 1945543), (133, 1638352), (152, 1433558), (266, 819176), (304, 716779), (532, 409588), (1064, 204794), (2128, 102397)]