20680191

素因数分解:

$3^4\times 7^1\times {\mathrm{36473}}^1$

素因数の和:36492

約数の個数: 20

約数和(自身を含む): 35306832

約数和(自身を除く): 14626641

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 36473, 109419, 255311, 328257, 765933, 984771, 2297799, 2954313, 6893397, 20680191]

約数ペア:

[(1, 20680191), (3, 6893397), (7, 2954313), (9, 2297799), (21, 984771), (27, 765933), (63, 328257), (81, 255311), (189, 109419), (567, 36473)]