21354448

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78509}}^1$

素因数の和:78534

約数の個数: 20

約数和(自身を含む): 43808580

約数和(自身を除く): 22454132

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78509, 157018, 314036, 628072, 1256144, 1334653, 2669306, 5338612, 10677224, 21354448]

約数ペア:

[(1, 21354448), (2, 10677224), (4, 5338612), (8, 2669306), (16, 1334653), (17, 1256144), (34, 628072), (68, 314036), (136, 157018), (272, 78509)]