20509531

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 26818560

約数和(自身を除く): 6309029

約数列:

[1, 7, 17, 19, 47, 119, 133, 193, 323, 329, 799, 893, 1351, 2261, 3281, 3667, 5593, 6251, 9071, 15181, 22967, 25669, 62339, 63497, 106267, 154207, 172349, 436373, 1079449, 1206443, 2929933, 20509531]

約数ペア:

[(1, 20509531), (7, 2929933), (17, 1206443), (19, 1079449), (47, 436373), (119, 172349), (133, 154207), (193, 106267), (323, 63497), (329, 62339), (799, 25669), (893, 22967), (1351, 15181), (2261, 9071), (3281, 6251), (3667, 5593)]