638440990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{86627}}^1$

素因数の和:86712

約数の個数: 32

約数和(自身を含む): 1272392064

約数和(自身を除く): 633951074

約数列:

[1, 2, 5, 10, 11, 22, 55, 67, 110, 134, 335, 670, 737, 1474, 3685, 7370, 86627, 173254, 433135, 866270, 952897, 1905794, 4764485, 5804009, 9528970, 11608018, 29020045, 58040090, 63844099, 127688198, 319220495, 638440990]

約数ペア:

[(1, 638440990), (2, 319220495), (5, 127688198), (10, 63844099), (11, 58040090), (22, 29020045), (55, 11608018), (67, 9528970), (110, 5804009), (134, 4764485), (335, 1905794), (670, 952897), (737, 866270), (1474, 433135), (3685, 173254), (7370, 86627)]