20942307

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5501}}^1$

素因数の和:5560

約数の個数: 20

約数和(自身を含む): 31955616

約数和(自身を除く): 11013309

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5501, 16503, 49509, 148527, 258547, 445581, 775641, 2326923, 6980769, 20942307]

約数ペア:

[(1, 20942307), (3, 6980769), (9, 2326923), (27, 775641), (47, 445581), (81, 258547), (141, 148527), (423, 49509), (1269, 16503), (3807, 5501)]