217755655

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:548

約数の個数: 32

約数和(自身を含む): 290283840

約数和(自身を除く): 72528185

約数列:

[1, 5, 13, 43, 65, 169, 215, 461, 559, 845, 2197, 2305, 2795, 5993, 7267, 10985, 19823, 29965, 36335, 77909, 94471, 99115, 257699, 389545, 472355, 1012817, 1288495, 3350087, 5064085, 16750435, 43551131, 217755655]

約数ペア:

[(1, 217755655), (5, 43551131), (13, 16750435), (43, 5064085), (65, 3350087), (169, 1288495), (215, 1012817), (461, 472355), (559, 389545), (845, 257699), (2197, 99115), (2305, 94471), (2795, 77909), (5993, 36335), (7267, 29965), (10985, 19823)]