20668879

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6547}}^1$

素因数の和:6606

約数の個数: 16

約数和(自身を含む): 26401536

約数和(自身を除く): 5732657

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6547, 45829, 72017, 268427, 504119, 1878989, 2952697, 20668879]

約数ペア:

[(1, 20668879), (7, 2952697), (11, 1878989), (41, 504119), (77, 268427), (287, 72017), (451, 45829), (3157, 6547)]