21741478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{449}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 15583322

約数列:

[1, 2, 11, 22, 31, 62, 71, 142, 341, 449, 682, 781, 898, 1562, 2201, 4402, 4939, 9878, 13919, 24211, 27838, 31879, 48422, 63758, 153109, 306218, 350669, 701338, 988249, 1976498, 10870739, 21741478]

約数ペア:

[(1, 21741478), (2, 10870739), (11, 1976498), (22, 988249), (31, 701338), (62, 350669), (71, 306218), (142, 153109), (341, 63758), (449, 48422), (682, 31879), (781, 27838), (898, 24211), (1562, 13919), (2201, 9878), (4402, 4939)]