19518760

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2477}}^1$

素因数の和:2685

約数の個数: 32

約数和(自身を含む): 44157960

約数和(自身を除く): 24639200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2477, 3940, 4954, 7880, 9908, 12385, 19816, 24770, 49540, 99080, 487969, 975938, 1951876, 2439845, 3903752, 4879690, 9759380, 19518760]

約数ペア:

[(1, 19518760), (2, 9759380), (4, 4879690), (5, 3903752), (8, 2439845), (10, 1951876), (20, 975938), (40, 487969), (197, 99080), (394, 49540), (788, 24770), (985, 19816), (1576, 12385), (1970, 9908), (2477, 7880), (3940, 4954)]