21252213

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4447}}^1$

素因数の和:4518

約数の個数: 20

約数和(自身を含む): 32292480

約数和(自身を除く): 11040267

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4447, 4779, 13341, 40023, 120069, 262373, 360207, 787119, 2361357, 7084071, 21252213]

約数ペア:

[(1, 21252213), (3, 7084071), (9, 2361357), (27, 787119), (59, 360207), (81, 262373), (177, 120069), (531, 40023), (1593, 13341), (4447, 4779)]