19900940

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5051}}^1$

素因数の和:5257

約数の個数: 24

約数和(自身を含む): 42012432

約数和(自身を除く): 22111492

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5051, 10102, 20204, 25255, 50510, 101020, 995047, 1990094, 3980188, 4975235, 9950470, 19900940]

約数ペア:

[(1, 19900940), (2, 9950470), (4, 4975235), (5, 3980188), (10, 1990094), (20, 995047), (197, 101020), (394, 50510), (788, 25255), (985, 20204), (1970, 10102), (3940, 5051)]