51430840

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5003}}^1$

素因数の和:5271

約数の個数: 32

約数和(自身を含む): 116192880

約数和(自身を除く): 64762040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5003, 5140, 10006, 10280, 20012, 25015, 40024, 50030, 100060, 200120, 1285771, 2571542, 5143084, 6428855, 10286168, 12857710, 25715420, 51430840]

約数ペア:

[(1, 51430840), (2, 25715420), (4, 12857710), (5, 10286168), (8, 6428855), (10, 5143084), (20, 2571542), (40, 1285771), (257, 200120), (514, 100060), (1028, 50030), (1285, 40024), (2056, 25015), (2570, 20012), (5003, 10280), (5140, 10006)]