520000840

素因数分解:

$2^3\times 5^1\times {\mathrm{2749}}^1\times {\mathrm{4729}}^1$

素因数の和:7489

約数の個数: 32

約数和(自身を含む): 1170675000

約数和(自身を除く): 650674160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2749, 4729, 5498, 9458, 10996, 13745, 18916, 21992, 23645, 27490, 37832, 47290, 54980, 94580, 109960, 189160, 13000021, 26000042, 52000084, 65000105, 104000168, 130000210, 260000420, 520000840]

約数ペア:

[(1, 520000840), (2, 260000420), (4, 130000210), (5, 104000168), (8, 65000105), (10, 52000084), (20, 26000042), (40, 13000021), (2749, 189160), (4729, 109960), (5498, 94580), (9458, 54980), (10996, 47290), (13745, 37832), (18916, 27490), (21992, 23645)]