20401003

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1289}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 26470800

約数和(自身を除く): 6069797

約数列:

[1, 7, 17, 19, 49, 119, 133, 323, 833, 931, 1289, 2261, 9023, 15827, 21913, 24491, 63161, 153391, 171437, 416347, 1073737, 1200059, 2914429, 20401003]

約数ペア:

[(1, 20401003), (7, 2914429), (17, 1200059), (19, 1073737), (49, 416347), (119, 171437), (133, 153391), (323, 63161), (833, 24491), (931, 21913), (1289, 15827), (2261, 9023)]