20874520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7789}}^1$

素因数の和:7867

約数の個数: 32

約数和(自身を含む): 47674800

約数和(自身を除く): 26800280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7789, 15578, 31156, 38945, 62312, 77890, 155780, 311560, 521863, 1043726, 2087452, 2609315, 4174904, 5218630, 10437260, 20874520]

約数ペア:

[(1, 20874520), (2, 10437260), (4, 5218630), (5, 4174904), (8, 2609315), (10, 2087452), (20, 1043726), (40, 521863), (67, 311560), (134, 155780), (268, 77890), (335, 62312), (536, 38945), (670, 31156), (1340, 15578), (2680, 7789)]