21438729

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{593}}^1$

素因数の和:718

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 13155831

約数列:

[1, 3, 9, 13, 27, 39, 103, 117, 309, 351, 593, 927, 1339, 1779, 2781, 4017, 5337, 7709, 12051, 16011, 23127, 36153, 61079, 69381, 183237, 208143, 549711, 794027, 1649133, 2382081, 7146243, 21438729]

約数ペア:

[(1, 21438729), (3, 7146243), (9, 2382081), (13, 1649133), (27, 794027), (39, 549711), (103, 208143), (117, 183237), (309, 69381), (351, 61079), (593, 36153), (927, 23127), (1339, 16011), (1779, 12051), (2781, 7709), (4017, 5337)]