21707091

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7331}}^1$

素因数の和:7391

約数の個数: 24

約数和(自身を含む): 36601344

約数和(自身を除く): 14894253

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7331, 21993, 51317, 65979, 153951, 344557, 461853, 1033671, 2411899, 3101013, 7235697, 21707091]

約数ペア:

[(1, 21707091), (3, 7235697), (7, 3101013), (9, 2411899), (21, 1033671), (47, 461853), (63, 344557), (141, 153951), (329, 65979), (423, 51317), (987, 21993), (2961, 7331)]