19543760

素因数分解:

$2^4\times 5^1\times {\mathrm{244297}}^1$

素因数の和:244310

約数の個数: 20

約数和(自身を含む): 45439428

約数和(自身を除く): 25895668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244297, 488594, 977188, 1221485, 1954376, 2442970, 3908752, 4885940, 9771880, 19543760]

約数ペア:

[(1, 19543760), (2, 9771880), (4, 4885940), (5, 3908752), (8, 2442970), (10, 1954376), (16, 1221485), (20, 977188), (40, 488594), (80, 244297)]