21304168

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140159}}^1$

素因数の和:140184

約数の個数: 16

約数和(自身を含む): 42048000

約数和(自身を除く): 20743832

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140159, 280318, 560636, 1121272, 2663021, 5326042, 10652084, 21304168]

約数ペア:

[(1, 21304168), (2, 10652084), (4, 5326042), (8, 2663021), (19, 1121272), (38, 560636), (76, 280318), (152, 140159)]