21178850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5501}}^1$

素因数の和:5531

約数の個数: 48

約数和(自身を含む): 49121856

約数和(自身を除く): 27943006

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 5501, 11002, 27505, 38507, 55010, 60511, 77014, 121022, 137525, 192535, 275050, 302555, 385070, 423577, 605110, 847154, 962675, 1512775, 1925350, 2117885, 3025550, 4235770, 10589425, 21178850]

約数ペア:

[(1, 21178850), (2, 10589425), (5, 4235770), (7, 3025550), (10, 2117885), (11, 1925350), (14, 1512775), (22, 962675), (25, 847154), (35, 605110), (50, 423577), (55, 385070), (70, 302555), (77, 275050), (110, 192535), (154, 137525), (175, 121022), (275, 77014), (350, 60511), (385, 55010), (550, 38507), (770, 27505), (1925, 11002), (3850, 5501)]