20998012

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10273}}^1$

素因数の和:10357

約数の個数: 24

約数和(自身を含む): 42575456

約数和(自身を除く): 21577444

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10273, 20546, 41092, 71911, 143822, 287644, 749929, 1499858, 2999716, 5249503, 10499006, 20998012]

約数ペア:

[(1, 20998012), (2, 10499006), (4, 5249503), (7, 2999716), (14, 1499858), (28, 749929), (73, 287644), (146, 143822), (292, 71911), (511, 41092), (1022, 20546), (2044, 10273)]