21313310

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5479}}^1$

素因数の和:5875

約数の個数: 16

約数和(自身を含む): 38469600

約数和(自身を除く): 17156290

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 5479, 10958, 27395, 54790, 2131331, 4262662, 10656655, 21313310]

約数ペア:

[(1, 21313310), (2, 10656655), (5, 4262662), (10, 2131331), (389, 54790), (778, 27395), (1945, 10958), (3890, 5479)]