18717962879

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{556271}}^1$

素因数の和:556331

約数の個数: 32

約数和(自身を含む): 25633013760

約数和(自身を除く): 6915050881

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 1463, 1771, 3059, 4807, 33649, 556271, 3893897, 6118981, 10569149, 12794233, 42832867, 73984043, 89559631, 116260639, 140736563, 243090427, 813824473, 985155941, 1701632989, 2673994697, 18717962879]

約数ペア:

[(1, 18717962879), (7, 2673994697), (11, 1701632989), (19, 985155941), (23, 813824473), (77, 243090427), (133, 140736563), (161, 116260639), (209, 89559631), (253, 73984043), (437, 42832867), (1463, 12794233), (1771, 10569149), (3059, 6118981), (4807, 3893897), (33649, 556271)]