20510007

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{787}}^1$

素因数の和:887

約数の個数: 32

約数和(自身を含む): 33587712

約数和(自身を除く): 13077705

約数列:

[1, 3, 7, 17, 21, 51, 73, 119, 219, 357, 511, 787, 1241, 1533, 2361, 3723, 5509, 8687, 13379, 16527, 26061, 40137, 57451, 93653, 172353, 280959, 402157, 976667, 1206471, 2930001, 6836669, 20510007]

約数ペア:

[(1, 20510007), (3, 6836669), (7, 2930001), (17, 1206471), (21, 976667), (51, 402157), (73, 280959), (119, 172353), (219, 93653), (357, 57451), (511, 40137), (787, 26061), (1241, 16527), (1533, 13379), (2361, 8687), (3723, 5509)]