51731440

素因数分解:

$2^4\times 5^1\times {\mathrm{646643}}^1$

素因数の和:646656

約数の個数: 20

約数和(自身を含む): 120275784

約数和(自身を除く): 68544344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 646643, 1293286, 2586572, 3233215, 5173144, 6466430, 10346288, 12932860, 25865720, 51731440]

約数ペア:

[(1, 51731440), (2, 25865720), (4, 12932860), (5, 10346288), (8, 6466430), (10, 5173144), (16, 3233215), (20, 2586572), (40, 1293286), (80, 646643)]