21371605

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:708

約数の個数: 16

約数和(自身を含む): 26380800

約数和(自身を除く): 5009195

約数列:

[1, 5, 47, 199, 235, 457, 995, 2285, 9353, 21479, 46765, 90943, 107395, 454715, 4274321, 21371605]

約数ペア:

[(1, 21371605), (5, 4274321), (47, 454715), (199, 107395), (235, 90943), (457, 46765), (995, 21479), (2285, 9353)]