16920015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9479}}^1$

素因数の和:9511

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 15842865

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 9479, 28437, 47395, 66353, 142185, 161143, 199059, 331765, 483429, 805715, 995295, 1128001, 2417145, 3384003, 5640005, 16920015]

約数ペア:

[(1, 16920015), (3, 5640005), (5, 3384003), (7, 2417145), (15, 1128001), (17, 995295), (21, 805715), (35, 483429), (51, 331765), (85, 199059), (105, 161143), (119, 142185), (255, 66353), (357, 47395), (595, 28437), (1785, 9479)]