81978990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{1367}}^1\times {\mathrm{1999}}^1$

素因数の和:3376

約数の個数: 32

約数和(自身を含む): 196992000

約数和(自身を除く): 115013010

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 1367, 1999, 2734, 3998, 4101, 5997, 6835, 8202, 9995, 11994, 13670, 19990, 20505, 29985, 41010, 59970, 2732633, 5465266, 8197899, 13663165, 16395798, 27326330, 40989495, 81978990]

約数ペア:

[(1, 81978990), (2, 40989495), (3, 27326330), (5, 16395798), (6, 13663165), (10, 8197899), (15, 5465266), (30, 2732633), (1367, 59970), (1999, 41010), (2734, 29985), (3998, 20505), (4101, 19990), (5997, 13670), (6835, 11994), (8202, 9995)]