18927760

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1201}}^1$

素因数の和:1411

約数の個数: 40

約数和(自身を含む): 44267256

約数和(自身を除く): 25339496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1201, 1576, 1970, 2402, 3152, 3940, 4804, 6005, 7880, 9608, 12010, 15760, 19216, 24020, 48040, 96080, 236597, 473194, 946388, 1182985, 1892776, 2365970, 3785552, 4731940, 9463880, 18927760]

約数ペア:

[(1, 18927760), (2, 9463880), (4, 4731940), (5, 3785552), (8, 2365970), (10, 1892776), (16, 1182985), (20, 946388), (40, 473194), (80, 236597), (197, 96080), (394, 48040), (788, 24020), (985, 19216), (1201, 15760), (1576, 12010), (1970, 9608), (2402, 7880), (3152, 6005), (3940, 4804)]