21954709

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{383}}^1\times {\mathrm{431}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 26542080

約数和(自身を除く): 4587371

約数列:

[1, 7, 19, 133, 383, 431, 2681, 3017, 7277, 8189, 50939, 57323, 165073, 1155511, 3136387, 21954709]

約数ペア:

[(1, 21954709), (7, 3136387), (19, 1155511), (133, 165073), (383, 57323), (431, 50939), (2681, 8189), (3017, 7277)]