12628520

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{643}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 28516320

約数和(自身を除く): 15887800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 643, 982, 1286, 1964, 2455, 2572, 3215, 3928, 4910, 5144, 6430, 9820, 12860, 19640, 25720, 315713, 631426, 1262852, 1578565, 2525704, 3157130, 6314260, 12628520]

約数ペア:

[(1, 12628520), (2, 6314260), (4, 3157130), (5, 2525704), (8, 1578565), (10, 1262852), (20, 631426), (40, 315713), (491, 25720), (643, 19640), (982, 12860), (1286, 9820), (1964, 6430), (2455, 5144), (2572, 4910), (3215, 3928)]