21052970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2099}}^1$

素因数の和:2182

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19771030

約数列:

[1, 2, 5, 10, 17, 34, 59, 85, 118, 170, 295, 590, 1003, 2006, 2099, 4198, 5015, 10030, 10495, 20990, 35683, 71366, 123841, 178415, 247682, 356830, 619205, 1238410, 2105297, 4210594, 10526485, 21052970]

約数ペア:

[(1, 21052970), (2, 10526485), (5, 4210594), (10, 2105297), (17, 1238410), (34, 619205), (59, 356830), (85, 247682), (118, 178415), (170, 123841), (295, 71366), (590, 35683), (1003, 20990), (2006, 10495), (2099, 10030), (4198, 5015)]