21000836355

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{264811}}^1$

素因数の和:265147

約数の個数: 32

約数和(自身を含む): 35692420608

約数和(自身を除く): 14691584253

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 311, 933, 1555, 4665, 5287, 15861, 26435, 79305, 264811, 794433, 1324055, 3972165, 4501787, 13505361, 22508935, 67526805, 82356221, 247068663, 411781105, 1235343315, 1400055757, 4200167271, 7000278785, 21000836355]

約数ペア:

[(1, 21000836355), (3, 7000278785), (5, 4200167271), (15, 1400055757), (17, 1235343315), (51, 411781105), (85, 247068663), (255, 82356221), (311, 67526805), (933, 22508935), (1555, 13505361), (4665, 4501787), (5287, 3972165), (15861, 1324055), (26435, 794433), (79305, 264811)]