18655912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2099}}^1$

素因数の和:2217

約数の個数: 32

約数和(自身を含む): 38556000

約数和(自身を除く): 19900088

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2099, 2222, 4198, 4444, 8396, 8888, 16792, 23089, 46178, 92356, 184712, 211999, 423998, 847996, 1695992, 2331989, 4663978, 9327956, 18655912]

約数ペア:

[(1, 18655912), (2, 9327956), (4, 4663978), (8, 2331989), (11, 1695992), (22, 847996), (44, 423998), (88, 211999), (101, 184712), (202, 92356), (404, 46178), (808, 23089), (1111, 16792), (2099, 8888), (2222, 8396), (4198, 4444)]