21499534

素因数分解:

$2^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2777}}^1$

素因数の和:2872

約数の個数: 24

約数和(自身を含む): 38003040

約数和(自身を除く): 16503506

約数列:

[1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 2777, 3871, 5554, 7742, 19439, 38878, 136073, 219383, 272146, 438766, 1535681, 3071362, 10749767, 21499534]

約数ペア:

[(1, 21499534), (2, 10749767), (7, 3071362), (14, 1535681), (49, 438766), (79, 272146), (98, 219383), (158, 136073), (553, 38878), (1106, 19439), (2777, 7742), (3871, 5554)]