51612800

素因数分解:

$2^7\times 5^2\times {\mathrm{127}}^2$

素因数の和:278

約数の個数: 72

約数和(自身を含む): 128511585

約数和(自身を除く): 76898785

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 200, 254, 320, 400, 508, 635, 640, 800, 1016, 1270, 1600, 2032, 2540, 3175, 3200, 4064, 5080, 6350, 8128, 10160, 12700, 16129, 16256, 20320, 25400, 32258, 40640, 50800, 64516, 80645, 81280, 101600, 129032, 161290, 203200, 258064, 322580, 403225, 406400, 516128, 645160, 806450, 1032256, 1290320, 1612900, 2064512, 2580640, 3225800, 5161280, 6451600, 10322560, 12903200, 25806400, 51612800]

約数ペア:

[(1, 51612800), (2, 25806400), (4, 12903200), (5, 10322560), (8, 6451600), (10, 5161280), (16, 3225800), (20, 2580640), (25, 2064512), (32, 1612900), (40, 1290320), (50, 1032256), (64, 806450), (80, 645160), (100, 516128), (127, 406400), (128, 403225), (160, 322580), (200, 258064), (254, 203200), (320, 161290), (400, 129032), (508, 101600), (635, 81280), (640, 80645), (800, 64516), (1016, 50800), (1270, 40640), (1600, 32258), (2032, 25400), (2540, 20320), (3175, 16256), (3200, 16129), (4064, 12700), (5080, 10160), (6350, 8128)]