19772019

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10613}}^1$

素因数の和:10648

約数の個数: 20

約数和(自身を含む): 30823056

約数和(自身を除く): 11051037

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10613, 31839, 95517, 244099, 286551, 732297, 859653, 2196891, 6590673, 19772019]

約数ペア:

[(1, 19772019), (3, 6590673), (9, 2196891), (23, 859653), (27, 732297), (69, 286551), (81, 244099), (207, 95517), (621, 31839), (1863, 10613)]