210008080

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2633}}^1$

素因数の和:3643

約数の個数: 40

約数和(自身を含む): 488944152

約数和(自身を除く): 278936072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1994, 2633, 3988, 4985, 5266, 7976, 9970, 10532, 13165, 15952, 19940, 21064, 26330, 39880, 42128, 52660, 79760, 105320, 210640, 2625101, 5250202, 10500404, 13125505, 21000808, 26251010, 42001616, 52502020, 105004040, 210008080]

約数ペア:

[(1, 210008080), (2, 105004040), (4, 52502020), (5, 42001616), (8, 26251010), (10, 21000808), (16, 13125505), (20, 10500404), (40, 5250202), (80, 2625101), (997, 210640), (1994, 105320), (2633, 79760), (3988, 52660), (4985, 42128), (5266, 39880), (7976, 26330), (9970, 21064), (10532, 19940), (13165, 15952)]