25257040

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{643}}^1$

素因数の和:1147

約数の個数: 40

約数和(自身を含む): 58933728

約数和(自身を除く): 33676688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 643, 982, 1286, 1964, 2455, 2572, 3215, 3928, 4910, 5144, 6430, 7856, 9820, 10288, 12860, 19640, 25720, 39280, 51440, 315713, 631426, 1262852, 1578565, 2525704, 3157130, 5051408, 6314260, 12628520, 25257040]

約数ペア:

[(1, 25257040), (2, 12628520), (4, 6314260), (5, 5051408), (8, 3157130), (10, 2525704), (16, 1578565), (20, 1262852), (40, 631426), (80, 315713), (491, 51440), (643, 39280), (982, 25720), (1286, 19640), (1964, 12860), (2455, 10288), (2572, 9820), (3215, 7856), (3928, 6430), (4910, 5144)]