20674640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36919}}^1$

素因数の和:36939

約数の個数: 40

約数和(自身を含む): 54936960

約数和(自身を除く): 34262320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36919, 73838, 147676, 184595, 258433, 295352, 369190, 516866, 590704, 738380, 1033732, 1292165, 1476760, 2067464, 2584330, 2953520, 4134928, 5168660, 10337320, 20674640]

約数ペア:

[(1, 20674640), (2, 10337320), (4, 5168660), (5, 4134928), (7, 2953520), (8, 2584330), (10, 2067464), (14, 1476760), (16, 1292165), (20, 1033732), (28, 738380), (35, 590704), (40, 516866), (56, 369190), (70, 295352), (80, 258433), (112, 184595), (140, 147676), (280, 73838), (560, 36919)]