19721224

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{145009}}^1$

素因数の和:145032

約数の個数: 16

約数和(自身を含む): 39152700

約数和(自身を除く): 19431476

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 145009, 290018, 580036, 1160072, 2465153, 4930306, 9860612, 19721224]

約数ペア:

[(1, 19721224), (2, 9860612), (4, 4930306), (8, 2465153), (17, 1160072), (34, 580036), (68, 290018), (136, 145009)]