65891980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{42787}}^1$

素因数の和:42814

約数の個数: 48

約数和(自身を含む): 172521216

約数和(自身を除く): 106629236

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 42787, 85574, 171148, 213935, 299509, 427870, 470657, 599018, 855740, 941314, 1198036, 1497545, 1882628, 2353285, 2995090, 3294599, 4706570, 5990180, 6589198, 9413140, 13178396, 16472995, 32945990, 65891980]

約数ペア:

[(1, 65891980), (2, 32945990), (4, 16472995), (5, 13178396), (7, 9413140), (10, 6589198), (11, 5990180), (14, 4706570), (20, 3294599), (22, 2995090), (28, 2353285), (35, 1882628), (44, 1497545), (55, 1198036), (70, 941314), (77, 855740), (110, 599018), (140, 470657), (154, 427870), (220, 299509), (308, 213935), (385, 171148), (770, 85574), (1540, 42787)]