21481064

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 47355840

約数和(自身を除く): 25874776

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 44, 68, 83, 88, 136, 166, 173, 187, 332, 346, 374, 664, 692, 748, 913, 1384, 1411, 1496, 1826, 1903, 2822, 2941, 3652, 3806, 5644, 5882, 7304, 7612, 11288, 11764, 14359, 15224, 15521, 23528, 28718, 31042, 32351, 57436, 62084, 64702, 114872, 124168, 129404, 157949, 244103, 258808, 315898, 488206, 631796, 976412, 1263592, 1952824, 2685133, 5370266, 10740532, 21481064]

約数ペア:

[(1, 21481064), (2, 10740532), (4, 5370266), (8, 2685133), (11, 1952824), (17, 1263592), (22, 976412), (34, 631796), (44, 488206), (68, 315898), (83, 258808), (88, 244103), (136, 157949), (166, 129404), (173, 124168), (187, 114872), (332, 64702), (346, 62084), (374, 57436), (664, 32351), (692, 31042), (748, 28718), (913, 23528), (1384, 15521), (1411, 15224), (1496, 14359), (1826, 11764), (1903, 11288), (2822, 7612), (2941, 7304), (3652, 5882), (3806, 5644)]