2021163920

素因数分解:

$2^4\times 5^1\times {\mathrm{3257}}^1\times {\mathrm{7757}}^1$

素因数の和:11027

約数の個数: 40

約数和(自身を含む): 4701254904

約数和(自身を除く): 2680090984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3257, 6514, 7757, 13028, 15514, 16285, 26056, 31028, 32570, 38785, 52112, 62056, 65140, 77570, 124112, 130280, 155140, 260560, 310280, 620560, 25264549, 50529098, 101058196, 126322745, 202116392, 252645490, 404232784, 505290980, 1010581960, 2021163920]

約数ペア:

[(1, 2021163920), (2, 1010581960), (4, 505290980), (5, 404232784), (8, 252645490), (10, 202116392), (16, 126322745), (20, 101058196), (40, 50529098), (80, 25264549), (3257, 620560), (6514, 310280), (7757, 260560), (13028, 155140), (15514, 130280), (16285, 124112), (26056, 77570), (31028, 65140), (32570, 62056), (38785, 52112)]