20856008

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{153353}}^1$

素因数の和:153376

約数の個数: 16

約数和(自身を含む): 41405580

約数和(自身を除く): 20549572

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 153353, 306706, 613412, 1226824, 2607001, 5214002, 10428004, 20856008]

約数ペア:

[(1, 20856008), (2, 10428004), (4, 5214002), (8, 2607001), (17, 1226824), (34, 613412), (68, 306706), (136, 153353)]