20564061

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51539}}^1$

素因数の和:51568

約数の個数: 16

約数和(自身を含む): 32985600

約数和(自身を除く): 12421539

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51539, 154617, 360773, 979241, 1082319, 2937723, 6854687, 20564061]

約数ペア:

[(1, 20564061), (3, 6854687), (7, 2937723), (19, 1082319), (21, 979241), (57, 360773), (133, 154617), (399, 51539)]