640991234

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{850121}}^1$

素因数の和:850165

約数の個数: 16

約数和(自身を含む): 1071153720

約数和(自身を除く): 430162486

約数列:

[1, 2, 13, 26, 29, 58, 377, 754, 850121, 1700242, 11051573, 22103146, 24653509, 49307018, 320495617, 640991234]

約数ペア:

[(1, 640991234), (2, 320495617), (13, 49307018), (26, 24653509), (29, 22103146), (58, 11051573), (377, 1700242), (754, 850121)]