21000559504

素因数分解:

$2^4\times {\mathrm{2707}}^1\times {\mathrm{484867}}^1$

素因数の和:487582

約数の個数: 20

約数和(自身を含む): 40703698864

約数和(自身を除く): 19703139360

約数列:

[1, 2, 4, 8, 16, 2707, 5414, 10828, 21656, 43312, 484867, 969734, 1939468, 3878936, 7757872, 1312534969, 2625069938, 5250139876, 10500279752, 21000559504]

約数ペア:

[(1, 21000559504), (2, 10500279752), (4, 5250139876), (8, 2625069938), (16, 1312534969), (2707, 7757872), (5414, 3878936), (10828, 1939468), (21656, 969734), (43312, 484867)]