19911195

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1051}}^1$

素因数の和:1483

約数の個数: 24

約数和(自身を含む): 34627632

約数和(自身を除く): 14716437

約数列:

[1, 3, 5, 9, 15, 45, 421, 1051, 1263, 2105, 3153, 3789, 5255, 6315, 9459, 15765, 18945, 47295, 442471, 1327413, 2212355, 3982239, 6637065, 19911195]

約数ペア:

[(1, 19911195), (3, 6637065), (5, 3982239), (9, 2212355), (15, 1327413), (45, 442471), (421, 47295), (1051, 18945), (1263, 15765), (2105, 9459), (3153, 6315), (3789, 5255)]