208171880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{809}}^1\times {\mathrm{919}}^1$

素因数の和:1746

約数の個数: 64

約数和(自身を含む): 536544000

約数和(自身を除く): 328372120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 809, 919, 1618, 1838, 3236, 3676, 4045, 4595, 5663, 6433, 6472, 7352, 8090, 9190, 11326, 12866, 16180, 18380, 22652, 25732, 28315, 32165, 32360, 36760, 45304, 51464, 56630, 64330, 113260, 128660, 226520, 257320, 743471, 1486942, 2973884, 3717355, 5204297, 5947768, 7434710, 10408594, 14869420, 20817188, 26021485, 29738840, 41634376, 52042970, 104085940, 208171880]

約数ペア:

[(1, 208171880), (2, 104085940), (4, 52042970), (5, 41634376), (7, 29738840), (8, 26021485), (10, 20817188), (14, 14869420), (20, 10408594), (28, 7434710), (35, 5947768), (40, 5204297), (56, 3717355), (70, 2973884), (140, 1486942), (280, 743471), (809, 257320), (919, 226520), (1618, 128660), (1838, 113260), (3236, 64330), (3676, 56630), (4045, 51464), (4595, 45304), (5663, 36760), (6433, 32360), (6472, 32165), (7352, 28315), (8090, 25732), (9190, 22652), (11326, 18380), (12866, 16180)]