20109712917

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{255839}}^1$

素因数の和:256065

約数の個数: 32

約数和(自身を含む): 32420044800

約数和(自身を除く): 12310331883

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 399, 591, 1379, 3743, 4137, 11229, 26201, 78603, 255839, 767517, 1790873, 4860941, 5372619, 14582823, 34026587, 50400283, 102079761, 151200849, 352801981, 957605377, 1058405943, 2872816131, 6703237639, 20109712917]

約数ペア:

[(1, 20109712917), (3, 6703237639), (7, 2872816131), (19, 1058405943), (21, 957605377), (57, 352801981), (133, 151200849), (197, 102079761), (399, 50400283), (591, 34026587), (1379, 14582823), (3743, 5372619), (4137, 4860941), (11229, 1790873), (26201, 767517), (78603, 255839)]