21053319

素因数分解:

$3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{3203}}^1$

素因数の和:3526

約数の個数: 16

約数和(自身を含む): 32193792

約数和(自身を除く): 11140473

約数列:

[1, 3, 7, 21, 313, 939, 2191, 3203, 6573, 9609, 22421, 67263, 1002539, 3007617, 7017773, 21053319]

約数ペア:

[(1, 21053319), (3, 7017773), (7, 3007617), (21, 1002539), (313, 67263), (939, 22421), (2191, 9609), (3203, 6573)]