15921729

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 23860200

約数和(自身を除く): 7938471

約数列:

[1, 3, 9, 37, 111, 137, 333, 349, 411, 1047, 1233, 3141, 5069, 12913, 15207, 38739, 45621, 47813, 116217, 143439, 430317, 1769081, 5307243, 15921729]

約数ペア:

[(1, 15921729), (3, 5307243), (9, 1769081), (37, 430317), (111, 143439), (137, 116217), (333, 47813), (349, 45621), (411, 38739), (1047, 15207), (1233, 12913), (3141, 5069)]