21241160

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31237}}^1$

素因数の和:31265

約数の個数: 32

約数和(自身を含む): 50605560

約数和(自身を除く): 29364400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31237, 62474, 124948, 156185, 249896, 312370, 531029, 624740, 1062058, 1249480, 2124116, 2655145, 4248232, 5310290, 10620580, 21241160]

約数ペア:

[(1, 21241160), (2, 10620580), (4, 5310290), (5, 4248232), (8, 2655145), (10, 2124116), (17, 1249480), (20, 1062058), (34, 624740), (40, 531029), (68, 312370), (85, 249896), (136, 156185), (170, 124948), (340, 62474), (680, 31237)]