2008190920

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{290201}}^1$

素因数の和:290385

約数の個数: 32

約数和(自身を含む): 4544563320

約数和(自身を除く): 2536372400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 290201, 580402, 1160804, 1451005, 2321608, 2902010, 5804020, 11608040, 50204773, 100409546, 200819092, 251023865, 401638184, 502047730, 1004095460, 2008190920]

約数ペア:

[(1, 2008190920), (2, 1004095460), (4, 502047730), (5, 401638184), (8, 251023865), (10, 200819092), (20, 100409546), (40, 50204773), (173, 11608040), (346, 5804020), (692, 2902010), (865, 2321608), (1384, 1451005), (1730, 1160804), (3460, 580402), (6920, 290201)]