19451660

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6997}}^1$

素因数の和:7145

約数の個数: 24

約数和(自身を含む): 41148240

約数和(自身を除く): 21696580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6997, 13994, 27988, 34985, 69970, 139940, 972583, 1945166, 3890332, 4862915, 9725830, 19451660]

約数ペア:

[(1, 19451660), (2, 9725830), (4, 4862915), (5, 3890332), (10, 1945166), (20, 972583), (139, 139940), (278, 69970), (556, 34985), (695, 27988), (1390, 13994), (2780, 6997)]