20210391

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4229}}^1$

素因数の和:4300

約数の個数: 20

約数和(自身を含む): 30709800

約数和(自身を除く): 10499409

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4229, 4779, 12687, 38061, 114183, 249511, 342549, 748533, 2245599, 6736797, 20210391]

約数ペア:

[(1, 20210391), (3, 6736797), (9, 2245599), (27, 748533), (59, 342549), (81, 249511), (177, 114183), (531, 38061), (1593, 12687), (4229, 4779)]