208920080

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20563}}^1$

素因数の和:20703

約数の個数: 40

約数和(自身を含む): 489587712

約数和(自身を除く): 280667632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 20563, 41126, 82252, 102815, 164504, 205630, 329008, 411260, 822520, 1645040, 2611501, 5223002, 10446004, 13057505, 20892008, 26115010, 41784016, 52230020, 104460040, 208920080]

約数ペア:

[(1, 208920080), (2, 104460040), (4, 52230020), (5, 41784016), (8, 26115010), (10, 20892008), (16, 13057505), (20, 10446004), (40, 5223002), (80, 2611501), (127, 1645040), (254, 822520), (508, 411260), (635, 329008), (1016, 205630), (1270, 164504), (2032, 102815), (2540, 82252), (5080, 41126), (10160, 20563)]