19997511

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9349}}^1$

素因数の和:9406

約数の個数: 16

約数和(自身を含む): 28723200

約数和(自身を除く): 8725689

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9349, 28047, 215027, 289819, 645081, 869457, 6665837, 19997511]

約数ペア:

[(1, 19997511), (3, 6665837), (23, 869457), (31, 645081), (69, 289819), (93, 215027), (713, 28047), (2139, 9349)]