3947979

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:375

約数の個数: 24

約数和(自身を含む): 6205248

約数和(自身を除く): 2257269

約数列:

[1, 3, 7, 21, 49, 107, 147, 251, 321, 749, 753, 1757, 2247, 5243, 5271, 12299, 15729, 26857, 36897, 80571, 187999, 563997, 1315993, 3947979]

約数ペア:

[(1, 3947979), (3, 1315993), (7, 563997), (21, 187999), (49, 80571), (107, 36897), (147, 26857), (251, 15729), (321, 12299), (749, 5271), (753, 5243), (1757, 2247)]