51379760

素因数分解:

$2^4\times 5^1\times {\mathrm{642247}}^1$

素因数の和:642260

約数の個数: 20

約数和(自身を含む): 119458128

約数和(自身を除く): 68078368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 642247, 1284494, 2568988, 3211235, 5137976, 6422470, 10275952, 12844940, 25689880, 51379760]

約数ペア:

[(1, 51379760), (2, 25689880), (4, 12844940), (5, 10275952), (8, 6422470), (10, 5137976), (16, 3211235), (20, 2568988), (40, 1284494), (80, 642247)]