71281480

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{2729}}^1$

素因数の和:3393

約数の個数: 32

約数和(自身を含む): 160687800

約数和(自身を除く): 89406320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 2612, 2729, 3265, 5224, 5458, 6530, 10916, 13060, 13645, 21832, 26120, 27290, 54580, 109160, 1782037, 3564074, 7128148, 8910185, 14256296, 17820370, 35640740, 71281480]

約数ペア:

[(1, 71281480), (2, 35640740), (4, 17820370), (5, 14256296), (8, 8910185), (10, 7128148), (20, 3564074), (40, 1782037), (653, 109160), (1306, 54580), (2612, 27290), (2729, 26120), (3265, 21832), (5224, 13645), (5458, 13060), (6530, 10916)]