821567245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 1156446720

約数和(自身を除く): 334879475

約数列:

[1, 5, 17, 23, 29, 43, 85, 115, 145, 215, 337, 391, 493, 667, 731, 989, 1247, 1685, 1955, 2465, 3335, 3655, 4945, 5729, 6235, 7751, 9773, 11339, 14491, 16813, 21199, 28645, 28681, 38755, 48865, 56695, 72455, 84065, 105995, 131767, 143405, 166141, 224779, 246347, 333293, 420239, 487577, 658835, 830705, 1123895, 1231735, 1666465, 2101195, 2437885, 3821243, 5665981, 7144063, 9665497, 19106215, 28329905, 35720315, 48327485, 164313449, 821567245]

約数ペア:

[(1, 821567245), (5, 164313449), (17, 48327485), (23, 35720315), (29, 28329905), (43, 19106215), (85, 9665497), (115, 7144063), (145, 5665981), (215, 3821243), (337, 2437885), (391, 2101195), (493, 1666465), (667, 1231735), (731, 1123895), (989, 830705), (1247, 658835), (1685, 487577), (1955, 420239), (2465, 333293), (3335, 246347), (3655, 224779), (4945, 166141), (5729, 143405), (6235, 131767), (7751, 105995), (9773, 84065), (11339, 72455), (14491, 56695), (16813, 48865), (21199, 38755), (28645, 28681)]