20561290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70901}}^1$

素因数の和:70937

約数の個数: 16

約数和(自身を含む): 38287080

約数和(自身を除く): 17725790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 70901, 141802, 354505, 709010, 2056129, 4112258, 10280645, 20561290]

約数ペア:

[(1, 20561290), (2, 10280645), (5, 4112258), (10, 2056129), (29, 709010), (58, 354505), (145, 141802), (290, 70901)]