81070780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{2551}}^1$

素因数の和:2794

約数の個数: 48

約数和(自身を含む): 195503616

約数和(自身を除く): 114432836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 227, 454, 908, 1135, 1589, 2270, 2551, 3178, 4540, 5102, 6356, 7945, 10204, 12755, 15890, 17857, 25510, 31780, 35714, 51020, 71428, 89285, 178570, 357140, 579077, 1158154, 2316308, 2895385, 4053539, 5790770, 8107078, 11581540, 16214156, 20267695, 40535390, 81070780]

約数ペア:

[(1, 81070780), (2, 40535390), (4, 20267695), (5, 16214156), (7, 11581540), (10, 8107078), (14, 5790770), (20, 4053539), (28, 2895385), (35, 2316308), (70, 1158154), (140, 579077), (227, 357140), (454, 178570), (908, 89285), (1135, 71428), (1589, 51020), (2270, 35714), (2551, 31780), (3178, 25510), (4540, 17857), (5102, 15890), (6356, 12755), (7945, 10204)]