19987138

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 13760702

約数列:

[1, 2, 17, 23, 34, 46, 61, 122, 391, 419, 782, 838, 1037, 1403, 2074, 2806, 7123, 9637, 14246, 19274, 23851, 25559, 47702, 51118, 163829, 327658, 434503, 587857, 869006, 1175714, 9993569, 19987138]

約数ペア:

[(1, 19987138), (2, 9993569), (17, 1175714), (23, 869006), (34, 587857), (46, 434503), (61, 327658), (122, 163829), (391, 51118), (419, 47702), (782, 25559), (838, 23851), (1037, 19274), (1403, 14246), (2074, 9637), (2806, 7123)]