19871931

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{9931}}^1$

素因数の和:9986

約数の個数: 16

約数和(自身を含む): 28604160

約数和(自身を除く): 8732229

約数列:

[1, 3, 23, 29, 69, 87, 667, 2001, 9931, 29793, 228413, 287999, 685239, 863997, 6623977, 19871931]

約数ペア:

[(1, 19871931), (3, 6623977), (23, 863997), (29, 685239), (69, 287999), (87, 228413), (667, 29793), (2001, 9931)]