64668020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{170179}}^1$

素因数の和:170207

約数の個数: 24

約数和(自身を含む): 142951200

約数和(自身を除く): 78283180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 170179, 340358, 680716, 850895, 1701790, 3233401, 3403580, 6466802, 12933604, 16167005, 32334010, 64668020]

約数ペア:

[(1, 64668020), (2, 32334010), (4, 16167005), (5, 12933604), (10, 6466802), (19, 3403580), (20, 3233401), (38, 1701790), (76, 850895), (95, 680716), (190, 340358), (380, 170179)]