21382040

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1489}}^1$

素因数の和:1859

約数の個数: 32

約数和(自身を含む): 48276000

約数和(自身を除く): 26893960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1489, 1795, 2872, 2978, 3590, 5956, 7180, 7445, 11912, 14360, 14890, 29780, 59560, 534551, 1069102, 2138204, 2672755, 4276408, 5345510, 10691020, 21382040]

約数ペア:

[(1, 21382040), (2, 10691020), (4, 5345510), (5, 4276408), (8, 2672755), (10, 2138204), (20, 1069102), (40, 534551), (359, 59560), (718, 29780), (1436, 14890), (1489, 14360), (1795, 11912), (2872, 7445), (2978, 7180), (3590, 5956)]