9987428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 20321280

約数和(自身を除く): 10333852

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 71, 92, 139, 142, 253, 278, 284, 506, 556, 781, 1012, 1529, 1562, 1633, 3058, 3124, 3197, 3266, 6116, 6394, 6532, 9869, 12788, 17963, 19738, 35167, 35926, 39476, 70334, 71852, 108559, 140668, 217118, 226987, 434236, 453974, 907948, 2496857, 4993714, 9987428]

約数ペア:

[(1, 9987428), (2, 4993714), (4, 2496857), (11, 907948), (22, 453974), (23, 434236), (44, 226987), (46, 217118), (71, 140668), (92, 108559), (139, 71852), (142, 70334), (253, 39476), (278, 35926), (284, 35167), (506, 19738), (556, 17963), (781, 12788), (1012, 9869), (1529, 6532), (1562, 6394), (1633, 6116), (3058, 3266), (3124, 3197)]