20512971325

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1051}}^1\times {\mathrm{10139}}^1$

素因数の和:11218

約数の個数: 48

約数和(自身を含む): 31745825280

約数和(自身を除く): 11232853955

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1051, 1925, 5255, 7357, 10139, 11561, 26275, 36785, 50695, 57805, 70973, 80927, 111529, 183925, 253475, 289025, 354865, 404635, 557645, 780703, 1774325, 2023175, 2788225, 3903515, 10656089, 19517575, 53280445, 74592623, 117216979, 266402225, 372963115, 586084895, 820518853, 1864815575, 2930424475, 4102594265, 20512971325]

約数ペア:

[(1, 20512971325), (5, 4102594265), (7, 2930424475), (11, 1864815575), (25, 820518853), (35, 586084895), (55, 372963115), (77, 266402225), (175, 117216979), (275, 74592623), (385, 53280445), (1051, 19517575), (1925, 10656089), (5255, 3903515), (7357, 2788225), (10139, 2023175), (11561, 1774325), (26275, 780703), (36785, 557645), (50695, 404635), (57805, 354865), (70973, 289025), (80927, 253475), (111529, 183925)]