30681980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3271}}^1$

素因数の和:3354

約数の個数: 48

約数和(自身を含む): 74758656

約数和(自身を除く): 44076676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 3271, 4690, 6542, 9380, 13084, 16355, 22897, 32710, 45794, 65420, 91588, 114485, 219157, 228970, 438314, 457940, 876628, 1095785, 1534099, 2191570, 3068198, 4383140, 6136396, 7670495, 15340990, 30681980]

約数ペア:

[(1, 30681980), (2, 15340990), (4, 7670495), (5, 6136396), (7, 4383140), (10, 3068198), (14, 2191570), (20, 1534099), (28, 1095785), (35, 876628), (67, 457940), (70, 438314), (134, 228970), (140, 219157), (268, 114485), (335, 91588), (469, 65420), (670, 45794), (938, 32710), (1340, 22897), (1876, 16355), (2345, 13084), (3271, 9380), (4690, 6542)]