19975994

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{2131}}^1$

素因数の和:2285

約数の個数: 16

約数和(自身を含む): 30956640

約数和(自身を除く): 10980646

約数列:

[1, 2, 43, 86, 109, 218, 2131, 4262, 4687, 9374, 91633, 183266, 232279, 464558, 9987997, 19975994]

約数ペア:

[(1, 19975994), (2, 9987997), (43, 464558), (86, 232279), (109, 183266), (218, 91633), (2131, 9374), (4262, 4687)]