378423980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1720109}}^1$

素因数の和:1720129

約数の個数: 24

約数和(自身を含む): 866935440

約数和(自身を除く): 488511460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1720109, 3440218, 6880436, 8600545, 17201090, 18921199, 34402180, 37842398, 75684796, 94605995, 189211990, 378423980]

約数ペア:

[(1, 378423980), (2, 189211990), (4, 94605995), (5, 75684796), (10, 37842398), (11, 34402180), (20, 18921199), (22, 17201090), (44, 8600545), (55, 6880436), (110, 3440218), (220, 1720109)]