20995544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{487}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 41899680

約数和(自身を除く): 20904136

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 317, 487, 634, 974, 1268, 1948, 2536, 3896, 5389, 8279, 10778, 16558, 21556, 33116, 43112, 66232, 154379, 308758, 617516, 1235032, 2624443, 5248886, 10497772, 20995544]

約数ペア:

[(1, 20995544), (2, 10497772), (4, 5248886), (8, 2624443), (17, 1235032), (34, 617516), (68, 308758), (136, 154379), (317, 66232), (487, 43112), (634, 33116), (974, 21556), (1268, 16558), (1948, 10778), (2536, 8279), (3896, 5389)]