28910140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{206501}}^1$

素因数の和:206517

約数の個数: 24

約数和(自身を含む): 69384672

約数和(自身を除く): 40474532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 206501, 413002, 826004, 1032505, 1445507, 2065010, 2891014, 4130020, 5782028, 7227535, 14455070, 28910140]

約数ペア:

[(1, 28910140), (2, 14455070), (4, 7227535), (5, 5782028), (7, 4130020), (10, 2891014), (14, 2065010), (20, 1445507), (28, 1032505), (35, 826004), (70, 413002), (140, 206501)]