639627867

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{4001}}^1$

素因数の和:4232

約数の個数: 32

約数和(自身を含む): 983531520

約数和(自身を除く): 343903653

約数列:

[1, 3, 9, 27, 31, 93, 191, 279, 573, 837, 1719, 4001, 5157, 5921, 12003, 17763, 36009, 53289, 108027, 124031, 159867, 372093, 764191, 1116279, 2292573, 3348837, 6877719, 20633157, 23689921, 71069763, 213209289, 639627867]

約数ペア:

[(1, 639627867), (3, 213209289), (9, 71069763), (27, 23689921), (31, 20633157), (93, 6877719), (191, 3348837), (279, 2292573), (573, 1116279), (837, 764191), (1719, 372093), (4001, 159867), (5157, 124031), (5921, 108027), (12003, 53289), (17763, 36009)]