211325480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{128857}}^1$

素因数の和:128909

約数の個数: 32

約数和(自身を含む): 487083240

約数和(自身を除く): 275757760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 128857, 257714, 515428, 644285, 1030856, 1288570, 2577140, 5154280, 5283137, 10566274, 21132548, 26415685, 42265096, 52831370, 105662740, 211325480]

約数ペア:

[(1, 211325480), (2, 105662740), (4, 52831370), (5, 42265096), (8, 26415685), (10, 21132548), (20, 10566274), (40, 5283137), (41, 5154280), (82, 2577140), (164, 1288570), (205, 1030856), (328, 644285), (410, 515428), (820, 257714), (1640, 128857)]