20781684002

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1\times {\mathrm{152249}}^1$

素因数の和:152881

約数の個数: 16

約数和(自身を含む): 31460940000

約数和(自身を除く): 10679255998

約数列:

[1, 2, 139, 278, 491, 982, 68249, 136498, 152249, 304498, 21162611, 42325222, 74754259, 149508518, 10390842001, 20781684002]

約数ペア:

[(1, 20781684002), (2, 10390842001), (139, 149508518), (278, 74754259), (491, 42325222), (982, 21162611), (68249, 304498), (136498, 152249)]