81597985

素因数分解:

$5^1\times 7^5\times {\mathrm{971}}^1$

素因数の和:1011

約数の個数: 24

約数和(自身を含む): 114353856

約数和(自身を除く): 32755871

約数列:

[1, 5, 7, 35, 49, 245, 343, 971, 1715, 2401, 4855, 6797, 12005, 16807, 33985, 47579, 84035, 237895, 333053, 1665265, 2331371, 11656855, 16319597, 81597985]

約数ペア:

[(1, 81597985), (5, 16319597), (7, 11656855), (35, 2331371), (49, 1665265), (245, 333053), (343, 237895), (971, 84035), (1715, 47579), (2401, 33985), (4855, 16807), (6797, 12005)]