639299612

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1201691}}^1$

素因数の和:1201721

約数の個数: 24

約数和(自身を含む): 1345895040

約数和(自身を除く): 706595428

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 1201691, 2403382, 4806764, 8411837, 16823674, 22832129, 33647348, 45664258, 91328516, 159824903, 319649806, 639299612]

約数ペア:

[(1, 639299612), (2, 319649806), (4, 159824903), (7, 91328516), (14, 45664258), (19, 33647348), (28, 22832129), (38, 16823674), (76, 8411837), (133, 4806764), (266, 2403382), (532, 1201691)]