64376420

素因数分解:

$2^2\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{2003}}^1$

素因数の和:3619

約数の個数: 24

約数和(自身を含む): 135342144

約数和(自身を除く): 70965724

約数列:

[1, 2, 4, 5, 10, 20, 1607, 2003, 3214, 4006, 6428, 8012, 8035, 10015, 16070, 20030, 32140, 40060, 3218821, 6437642, 12875284, 16094105, 32188210, 64376420]

約数ペア:

[(1, 64376420), (2, 32188210), (4, 16094105), (5, 12875284), (10, 6437642), (20, 3218821), (1607, 40060), (2003, 32140), (3214, 20030), (4006, 16070), (6428, 10015), (8012, 8035)]