3997990

素因数分解:

$2^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{739}}^1$

素因数の和:1287

約数の個数: 16

約数和(自身を含む): 7219440

約数和(自身を除く): 3221450

約数列:

[1, 2, 5, 10, 541, 739, 1082, 1478, 2705, 3695, 5410, 7390, 399799, 799598, 1998995, 3997990]

約数ペア:

[(1, 3997990), (2, 1998995), (5, 799598), (10, 399799), (541, 7390), (739, 5410), (1082, 3695), (1478, 2705)]