21306543

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8693}}^1$

素因数の和:8758

約数の個数: 16

約数和(自身を含む): 30602880

約数和(自身を除く): 9296337

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8693, 26079, 165167, 373799, 495501, 1121397, 7102181, 21306543]

約数ペア:

[(1, 21306543), (3, 7102181), (19, 1121397), (43, 495501), (57, 373799), (129, 165167), (817, 26079), (2451, 8693)]