19869039

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{7639}}^1$

素因数の和:7679

約数の個数: 18

約数和(自身を含む): 30491240

約数和(自身を除く): 10622201

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 7639, 22917, 68751, 129863, 389589, 1168767, 2207671, 6623013, 19869039]

約数ペア:

[(1, 19869039), (3, 6623013), (9, 2207671), (17, 1168767), (51, 389589), (153, 129863), (289, 68751), (867, 22917), (2601, 7639)]