18961989

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:604

約数の個数: 16

約数和(自身を含む): 25724928

約数和(自身を除く): 6762939

約数列:

[1, 3, 127, 157, 317, 381, 471, 951, 19939, 40259, 49769, 59817, 120777, 149307, 6320663, 18961989]

約数ペア:

[(1, 18961989), (3, 6320663), (127, 149307), (157, 120777), (317, 59817), (381, 49769), (471, 40259), (951, 19939)]