644597569

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{751}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 821256192

約数和(自身を除く): 176658623

約数列:

[1, 7, 11, 71, 77, 157, 497, 751, 781, 1099, 1727, 5257, 5467, 8261, 11147, 12089, 53321, 57827, 78029, 117907, 122617, 373247, 586531, 825349, 858319, 1296977, 4105717, 8371397, 9078839, 58599779, 92085367, 644597569]

約数ペア:

[(1, 644597569), (7, 92085367), (11, 58599779), (71, 9078839), (77, 8371397), (157, 4105717), (497, 1296977), (751, 858319), (781, 825349), (1099, 586531), (1727, 373247), (5257, 122617), (5467, 117907), (8261, 78029), (11147, 57827), (12089, 53321)]