668501636

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{213989}}^1$

素因数の和:214075

約数の個数: 24

約数和(自身を含む): 1294211520

約数和(自身を除く): 625709884

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 213989, 427978, 855956, 2353879, 4707758, 9415516, 15193219, 30386438, 60772876, 167125409, 334250818, 668501636]

約数ペア:

[(1, 668501636), (2, 334250818), (4, 167125409), (11, 60772876), (22, 30386438), (44, 15193219), (71, 9415516), (142, 4707758), (284, 2353879), (781, 855956), (1562, 427978), (3124, 213989)]