71665517

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{211}}^1\times {\mathrm{401}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 90678336

約数和(自身を除く): 19012819

約数列:

[1, 7, 11, 77, 121, 211, 401, 847, 1477, 2321, 2807, 4411, 16247, 25531, 30877, 48521, 84611, 178717, 339647, 592277, 930721, 6515047, 10237931, 71665517]

約数ペア:

[(1, 71665517), (7, 10237931), (11, 6515047), (77, 930721), (121, 592277), (211, 339647), (401, 178717), (847, 84611), (1477, 48521), (2321, 30877), (2807, 25531), (4411, 16247)]