21002404

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5309}}^1$

素因数の和:5379

約数の個数: 24

約数和(自身を含む): 39251520

約数和(自身を除く): 18249116

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5309, 10618, 21236, 122107, 228287, 244214, 456574, 488428, 913148, 5250601, 10501202, 21002404]

約数ペア:

[(1, 21002404), (2, 10501202), (4, 5250601), (23, 913148), (43, 488428), (46, 456574), (86, 244214), (92, 228287), (172, 122107), (989, 21236), (1978, 10618), (3956, 5309)]