338980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{997}}^1$

素因数の和:1023

約数の個数: 24

約数和(自身を含む): 754488

約数和(自身を除く): 415508

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 997, 1994, 3988, 4985, 9970, 16949, 19940, 33898, 67796, 84745, 169490, 338980]

約数ペア:

[(1, 338980), (2, 169490), (4, 84745), (5, 67796), (10, 33898), (17, 19940), (20, 16949), (34, 9970), (68, 4985), (85, 3988), (170, 1994), (340, 997)]