21659275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 32060448

約数和(自身を除く): 10401173

約数列:

[1, 5, 11, 17, 25, 41, 55, 85, 113, 187, 205, 275, 425, 451, 565, 697, 935, 1025, 1243, 1921, 2255, 2825, 3485, 4633, 4675, 6215, 7667, 9605, 11275, 17425, 21131, 23165, 31075, 38335, 48025, 50963, 78761, 105655, 115825, 191675, 254815, 393805, 528275, 866371, 1274075, 1969025, 4331855, 21659275]

約数ペア:

[(1, 21659275), (5, 4331855), (11, 1969025), (17, 1274075), (25, 866371), (41, 528275), (55, 393805), (85, 254815), (113, 191675), (187, 115825), (205, 105655), (275, 78761), (425, 50963), (451, 48025), (565, 38335), (697, 31075), (935, 23165), (1025, 21131), (1243, 17425), (1921, 11275), (2255, 9605), (2825, 7667), (3485, 6215), (4633, 4675)]