208078520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{400151}}^1$

素因数の和:400175

約数の個数: 32

約数和(自身を含む): 504191520

約数和(自身を除く): 296113000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 400151, 800302, 1600604, 2000755, 3201208, 4001510, 5201963, 8003020, 10403926, 16006040, 20807852, 26009815, 41615704, 52019630, 104039260, 208078520]

約数ペア:

[(1, 208078520), (2, 104039260), (4, 52019630), (5, 41615704), (8, 26009815), (10, 20807852), (13, 16006040), (20, 10403926), (26, 8003020), (40, 5201963), (52, 4001510), (65, 3201208), (104, 2000755), (130, 1600604), (260, 800302), (520, 400151)]