20719580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147997}}^1$

素因数の和:148013

約数の個数: 24

約数和(自身を含む): 49727328

約数和(自身を除く): 29007748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147997, 295994, 591988, 739985, 1035979, 1479970, 2071958, 2959940, 4143916, 5179895, 10359790, 20719580]

約数ペア:

[(1, 20719580), (2, 10359790), (4, 5179895), (5, 4143916), (7, 2959940), (10, 2071958), (14, 1479970), (20, 1035979), (28, 739985), (35, 591988), (70, 295994), (140, 147997)]