81301325

素因数分解:

$5^2\times 7^1\times {\mathrm{383}}^1\times {\mathrm{1213}}^1$

素因数の和:1613

約数の個数: 24

約数和(自身を含む): 115611648

約数和(自身を除く): 34310323

約数列:

[1, 5, 7, 25, 35, 175, 383, 1213, 1915, 2681, 6065, 8491, 9575, 13405, 30325, 42455, 67025, 212275, 464579, 2322895, 3252053, 11614475, 16260265, 81301325]

約数ペア:

[(1, 81301325), (5, 16260265), (7, 11614475), (25, 3252053), (35, 2322895), (175, 464579), (383, 212275), (1213, 67025), (1915, 42455), (2681, 30325), (6065, 13405), (8491, 9575)]