19780030

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68207}}^1$

素因数の和:68243

約数の個数: 16

約数和(自身を含む): 36832320

約数和(自身を除く): 17052290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68207, 136414, 341035, 682070, 1978003, 3956006, 9890015, 19780030]

約数ペア:

[(1, 19780030), (2, 9890015), (5, 3956006), (10, 1978003), (29, 682070), (58, 341035), (145, 136414), (290, 68207)]