257612390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{216481}}^1$

素因数の和:216512

約数の個数: 32

約数和(自身を含む): 561121344

約数和(自身を除く): 303508954

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190, 216481, 432962, 1082405, 1515367, 2164810, 3030734, 3680177, 7360354, 7576835, 15153670, 18400885, 25761239, 36801770, 51522478, 128806195, 257612390]

約数ペア:

[(1, 257612390), (2, 128806195), (5, 51522478), (7, 36801770), (10, 25761239), (14, 18400885), (17, 15153670), (34, 7576835), (35, 7360354), (70, 3680177), (85, 3030734), (119, 2164810), (170, 1515367), (238, 1082405), (595, 432962), (1190, 216481)]