217019825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{8867}}^1$

素因数の和:8977

約数の個数: 24

約数和(自身を含む): 296900640

約数和(自身を除く): 79880815

約数列:

[1, 5, 11, 25, 55, 89, 275, 445, 979, 2225, 4895, 8867, 24475, 44335, 97537, 221675, 487685, 789163, 2438425, 3945815, 8680793, 19729075, 43403965, 217019825]

約数ペア:

[(1, 217019825), (5, 43403965), (11, 19729075), (25, 8680793), (55, 3945815), (89, 2438425), (275, 789163), (445, 487685), (979, 221675), (2225, 97537), (4895, 44335), (8867, 24475)]