21347683

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 26142480

約数和(自身を除く): 4794797

約数列:

[1, 7, 29, 49, 83, 181, 203, 581, 1267, 1421, 2407, 4067, 5249, 8869, 15023, 16849, 36743, 105161, 117943, 257201, 435667, 736127, 3049669, 21347683]

約数ペア:

[(1, 21347683), (7, 3049669), (29, 736127), (49, 435667), (83, 257201), (181, 117943), (203, 105161), (581, 36743), (1267, 16849), (1421, 15023), (2407, 8869), (4067, 5249)]