21685659

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10247781

約数列:

[1, 3, 17, 47, 51, 83, 109, 141, 249, 327, 799, 1411, 1853, 2397, 3901, 4233, 5123, 5559, 9047, 11703, 15369, 27141, 66317, 87091, 153799, 198951, 261273, 425209, 461397, 1275627, 7228553, 21685659]

約数ペア:

[(1, 21685659), (3, 7228553), (17, 1275627), (47, 461397), (51, 425209), (83, 261273), (109, 198951), (141, 153799), (249, 87091), (327, 66317), (799, 27141), (1411, 15369), (1853, 11703), (2397, 9047), (3901, 5559), (4233, 5123)]