204342520

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{7393}}^1$

素因数の和:8095

約数の個数: 32

約数和(自身を含む): 460498320

約数和(自身を除く): 256155800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3455, 5528, 6910, 7393, 13820, 14786, 27640, 29572, 36965, 59144, 73930, 147860, 295720, 5108563, 10217126, 20434252, 25542815, 40868504, 51085630, 102171260, 204342520]

約数ペア:

[(1, 204342520), (2, 102171260), (4, 51085630), (5, 40868504), (8, 25542815), (10, 20434252), (20, 10217126), (40, 5108563), (691, 295720), (1382, 147860), (2764, 73930), (3455, 59144), (5528, 36965), (6910, 29572), (7393, 27640), (13820, 14786)]