21826160

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2503}}^1$

素因数の和:2625

約数の個数: 40

約数和(自身を含む): 51231840

約数和(自身を除く): 29405680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2503, 4360, 5006, 8720, 10012, 12515, 20024, 25030, 40048, 50060, 100120, 200240, 272827, 545654, 1091308, 1364135, 2182616, 2728270, 4365232, 5456540, 10913080, 21826160]

約数ペア:

[(1, 21826160), (2, 10913080), (4, 5456540), (5, 4365232), (8, 2728270), (10, 2182616), (16, 1364135), (20, 1091308), (40, 545654), (80, 272827), (109, 200240), (218, 100120), (436, 50060), (545, 40048), (872, 25030), (1090, 20024), (1744, 12515), (2180, 10012), (2503, 8720), (4360, 5006)]