21380547

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{1901}}^1$

素因数の和:2090

約数の個数: 16

約数和(自身を含む): 29945088

約数和(自身を除く): 8564541

約数列:

[1, 3, 23, 69, 163, 489, 1901, 3749, 5703, 11247, 43723, 131169, 309863, 929589, 7126849, 21380547]

約数ペア:

[(1, 21380547), (3, 7126849), (23, 929589), (69, 309863), (163, 131169), (489, 43723), (1901, 11247), (3749, 5703)]