256123581

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{23143}}^1$

素因数の和:23201

約数の個数: 32

約数和(自身を含む): 426590208

約数和(自身を除く): 170466627

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 3689, 11067, 23143, 69429, 162001, 393431, 486003, 717433, 1180293, 2152299, 2754017, 5022031, 8262051, 12196361, 15066093, 36589083, 85374527, 256123581]

約数ペア:

[(1, 256123581), (3, 85374527), (7, 36589083), (17, 15066093), (21, 12196361), (31, 8262051), (51, 5022031), (93, 2754017), (119, 2152299), (217, 1180293), (357, 717433), (527, 486003), (651, 393431), (1581, 162001), (3689, 69429), (11067, 23143)]