30720880

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2803}}^1$

素因数の和:2953

約数の個数: 40

約数和(自身を含む): 71973072

約数和(自身を除く): 41252192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2192, 2740, 2803, 5480, 5606, 10960, 11212, 14015, 22424, 28030, 44848, 56060, 112120, 224240, 384011, 768022, 1536044, 1920055, 3072088, 3840110, 6144176, 7680220, 15360440, 30720880]

約数ペア:

[(1, 30720880), (2, 15360440), (4, 7680220), (5, 6144176), (8, 3840110), (10, 3072088), (16, 1920055), (20, 1536044), (40, 768022), (80, 384011), (137, 224240), (274, 112120), (548, 56060), (685, 44848), (1096, 28030), (1370, 22424), (2192, 14015), (2740, 11212), (2803, 10960), (5480, 5606)]