209400920

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{18899}}^1$

素因数の和:19187

約数の個数: 32

約数和(自身を含む): 472878000

約数和(自身を除く): 263477080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 18899, 37798, 75596, 94495, 151192, 188990, 377980, 755960, 5235023, 10470046, 20940092, 26175115, 41880184, 52350230, 104700460, 209400920]

約数ペア:

[(1, 209400920), (2, 104700460), (4, 52350230), (5, 41880184), (8, 26175115), (10, 20940092), (20, 10470046), (40, 5235023), (277, 755960), (554, 377980), (1108, 188990), (1385, 151192), (2216, 94495), (2770, 75596), (5540, 37798), (11080, 18899)]