6455720

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{643}}^1$

素因数の和:905

約数の個数: 32

約数和(自身を含む): 14605920

約数和(自身を除く): 8150200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 643, 1004, 1255, 1286, 2008, 2510, 2572, 3215, 5020, 5144, 6430, 10040, 12860, 25720, 161393, 322786, 645572, 806965, 1291144, 1613930, 3227860, 6455720]

約数ペア:

[(1, 6455720), (2, 3227860), (4, 1613930), (5, 1291144), (8, 806965), (10, 645572), (20, 322786), (40, 161393), (251, 25720), (502, 12860), (643, 10040), (1004, 6430), (1255, 5144), (1286, 5020), (2008, 3215), (2510, 2572)]