21000140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150001}}^1$

素因数の和:150017

約数の個数: 24

約数和(自身を含む): 50400672

約数和(自身を除く): 29400532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150001, 300002, 600004, 750005, 1050007, 1500010, 2100014, 3000020, 4200028, 5250035, 10500070, 21000140]

約数ペア:

[(1, 21000140), (2, 10500070), (4, 5250035), (5, 4200028), (7, 3000020), (10, 2100014), (14, 1500010), (20, 1050007), (28, 750005), (35, 600004), (70, 300002), (140, 150001)]