988940

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 2095632

約数和(自身を除く): 1106692

約数列:

[1, 2, 4, 5, 10, 20, 197, 251, 394, 502, 788, 985, 1004, 1255, 1970, 2510, 3940, 5020, 49447, 98894, 197788, 247235, 494470, 988940]

約数ペア:

[(1, 988940), (2, 494470), (4, 247235), (5, 197788), (10, 98894), (20, 49447), (197, 5020), (251, 3940), (394, 2510), (502, 1970), (788, 1255), (985, 1004)]