21533001

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^2\times {\mathrm{107}}^1$

素因数の和:198

約数の個数: 36

約数和(自身を含む): 34645968

約数和(自身を除く): 13112967

約数列:

[1, 3, 7, 21, 37, 49, 107, 111, 147, 259, 321, 749, 777, 1369, 1813, 2247, 3959, 4107, 5243, 5439, 9583, 11877, 15729, 27713, 28749, 67081, 83139, 146483, 193991, 201243, 439449, 581973, 1025381, 3076143, 7177667, 21533001]

約数ペア:

[(1, 21533001), (3, 7177667), (7, 3076143), (21, 1025381), (37, 581973), (49, 439449), (107, 201243), (111, 193991), (147, 146483), (259, 83139), (321, 67081), (749, 28749), (777, 27713), (1369, 15729), (1813, 11877), (2247, 9583), (3959, 5439), (4107, 5243)]