18226481

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 36

約数和(自身を含む): 24033024

約数和(自身を除く): 5806543

約数列:

[1, 7, 13, 31, 49, 71, 91, 169, 217, 403, 497, 637, 923, 1183, 1519, 2201, 2821, 3479, 5239, 6461, 8281, 11999, 15407, 19747, 28613, 36673, 45227, 83993, 107849, 200291, 256711, 371969, 587951, 1402037, 2603783, 18226481]

約数ペア:

[(1, 18226481), (7, 2603783), (13, 1402037), (31, 587951), (49, 371969), (71, 256711), (91, 200291), (169, 107849), (217, 83993), (403, 45227), (497, 36673), (637, 28613), (923, 19747), (1183, 15407), (1519, 11999), (2201, 8281), (2821, 6461), (3479, 5239)]