20515976397

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19155907}}^1$

素因数の和:19155937

約数の個数: 24

約数和(自身を含む): 35859859776

約数和(自身を除く): 15343883379

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19155907, 57467721, 134091349, 172403163, 325650419, 402274047, 976951257, 1206822141, 2279552933, 2930853771, 6838658799, 20515976397]

約数ペア:

[(1, 20515976397), (3, 6838658799), (7, 2930853771), (9, 2279552933), (17, 1206822141), (21, 976951257), (51, 402274047), (63, 325650419), (119, 172403163), (153, 134091349), (357, 57467721), (1071, 19155907)]