20875813

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1319}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 27086400

約数和(自身を除く): 6210587

約数列:

[1, 7, 17, 19, 49, 119, 133, 323, 833, 931, 1319, 2261, 9233, 15827, 22423, 25061, 64631, 156961, 175427, 426037, 1098727, 1227989, 2982259, 20875813]

約数ペア:

[(1, 20875813), (7, 2982259), (17, 1227989), (19, 1098727), (49, 426037), (119, 175427), (133, 156961), (323, 64631), (833, 25061), (931, 22423), (1319, 15827), (2261, 9233)]