21294489

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13469}}^1$

素因数の和:13520

約数の個数: 16

約数和(自身を含む): 31034880

約数和(自身を除く): 9740391

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13469, 40407, 228973, 417539, 686919, 1252617, 7098163, 21294489]

約数ペア:

[(1, 21294489), (3, 7098163), (17, 1252617), (31, 686919), (51, 417539), (93, 228973), (527, 40407), (1581, 13469)]