20966480

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1913}}^1$

素因数の和:2063

約数の個数: 40

約数和(自身を含む): 49128552

約数和(自身を除く): 28162072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1913, 2192, 2740, 3826, 5480, 7652, 9565, 10960, 15304, 19130, 30608, 38260, 76520, 153040, 262081, 524162, 1048324, 1310405, 2096648, 2620810, 4193296, 5241620, 10483240, 20966480]

約数ペア:

[(1, 20966480), (2, 10483240), (4, 5241620), (5, 4193296), (8, 2620810), (10, 2096648), (16, 1310405), (20, 1048324), (40, 524162), (80, 262081), (137, 153040), (274, 76520), (548, 38260), (685, 30608), (1096, 19130), (1370, 15304), (1913, 10960), (2192, 9565), (2740, 7652), (3826, 5480)]