19791880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5101}}^1$

素因数の和:5209

約数の個数: 32

約数和(自身を含む): 44999640

約数和(自身を除く): 25207760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5101, 10202, 20404, 25505, 40808, 51010, 102020, 204040, 494797, 989594, 1979188, 2473985, 3958376, 4947970, 9895940, 19791880]

約数ペア:

[(1, 19791880), (2, 9895940), (4, 4947970), (5, 3958376), (8, 2473985), (10, 1979188), (20, 989594), (40, 494797), (97, 204040), (194, 102020), (388, 51010), (485, 40808), (776, 25505), (970, 20404), (1940, 10202), (3880, 5101)]