15981140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{541}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 38607744

約数和(自身を除く): 22626604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 541, 844, 1055, 1082, 1477, 2110, 2164, 2705, 2954, 3787, 4220, 5410, 5908, 7385, 7574, 10820, 14770, 15148, 18935, 29540, 37870, 75740, 114151, 228302, 456604, 570755, 799057, 1141510, 1598114, 2283020, 3196228, 3995285, 7990570, 15981140]

約数ペア:

[(1, 15981140), (2, 7990570), (4, 3995285), (5, 3196228), (7, 2283020), (10, 1598114), (14, 1141510), (20, 799057), (28, 570755), (35, 456604), (70, 228302), (140, 114151), (211, 75740), (422, 37870), (541, 29540), (844, 18935), (1055, 15148), (1082, 14770), (1477, 10820), (2110, 7574), (2164, 7385), (2705, 5908), (2954, 5410), (3787, 4220)]