3978253839

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{321631}}^1$

素因数の和:321691

約数の個数: 32

約数和(自身を含む): 6587023360

約数和(自身を除く): 2608769521

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 133, 217, 399, 589, 651, 1767, 4123, 12369, 321631, 964893, 2251417, 6110989, 6754251, 9970561, 18332967, 29911683, 42776923, 69793927, 128330769, 189440659, 209381781, 568321977, 1326084613, 3978253839]

約数ペア:

[(1, 3978253839), (3, 1326084613), (7, 568321977), (19, 209381781), (21, 189440659), (31, 128330769), (57, 69793927), (93, 42776923), (133, 29911683), (217, 18332967), (399, 9970561), (589, 6754251), (651, 6110989), (1767, 2251417), (4123, 964893), (12369, 321631)]