21597260

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9907}}^1$

素因数の和:10025

約数の個数: 24

約数和(自身を含む): 45774960

約数和(自身を除く): 24177700

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9907, 19814, 39628, 49535, 99070, 198140, 1079863, 2159726, 4319452, 5399315, 10798630, 21597260]

約数ペア:

[(1, 21597260), (2, 10798630), (4, 5399315), (5, 4319452), (10, 2159726), (20, 1079863), (109, 198140), (218, 99070), (436, 49535), (545, 39628), (1090, 19814), (2180, 9907)]