21155361

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13381}}^1$

素因数の和:13432

約数の個数: 16

約数和(自身を含む): 30832128

約数和(自身を除く): 9676767

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13381, 40143, 227477, 414811, 682431, 1244433, 7051787, 21155361]

約数ペア:

[(1, 21155361), (3, 7051787), (17, 1244433), (31, 682431), (51, 414811), (93, 227477), (527, 40143), (1581, 13381)]