21310910

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10709}}^1$

素因数の和:10915

約数の個数: 16

約数和(自身を含む): 38556000

約数和(自身を除く): 17245090

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 10709, 21418, 53545, 107090, 2131091, 4262182, 10655455, 21310910]

約数ペア:

[(1, 21310910), (2, 10655455), (5, 4262182), (10, 2131091), (199, 107090), (398, 53545), (995, 21418), (1990, 10709)]