80111780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{1427}}^1$

素因数の和:1844

約数の個数: 48

約数和(自身を含む): 192882816

約数和(自身を除く): 112771036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 401, 802, 1427, 1604, 2005, 2807, 2854, 4010, 5614, 5708, 7135, 8020, 9989, 11228, 14035, 14270, 19978, 28070, 28540, 39956, 49945, 56140, 99890, 199780, 572227, 1144454, 2288908, 2861135, 4005589, 5722270, 8011178, 11444540, 16022356, 20027945, 40055890, 80111780]

約数ペア:

[(1, 80111780), (2, 40055890), (4, 20027945), (5, 16022356), (7, 11444540), (10, 8011178), (14, 5722270), (20, 4005589), (28, 2861135), (35, 2288908), (70, 1144454), (140, 572227), (401, 199780), (802, 99890), (1427, 56140), (1604, 49945), (2005, 39956), (2807, 28540), (2854, 28070), (4010, 19978), (5614, 14270), (5708, 14035), (7135, 11228), (8020, 9989)]