217236428

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{5503}}^1$

素因数の和:5717

約数の個数: 24

約数和(自身を含む): 388362240

約数和(自身を除く): 171125812

約数列:

[1, 2, 4, 71, 139, 142, 278, 284, 556, 5503, 9869, 11006, 19738, 22012, 39476, 390713, 764917, 781426, 1529834, 1562852, 3059668, 54309107, 108618214, 217236428]

約数ペア:

[(1, 217236428), (2, 108618214), (4, 54309107), (71, 3059668), (139, 1562852), (142, 1529834), (278, 781426), (284, 764917), (556, 390713), (5503, 39476), (9869, 22012), (11006, 19738)]