28406780

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{6257}}^1$

素因数の和:6493

約数の個数: 24

約数和(自身を含む): 59926608

約数和(自身を除く): 31519828

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 6257, 12514, 25028, 31285, 62570, 125140, 1420339, 2840678, 5681356, 7101695, 14203390, 28406780]

約数ペア:

[(1, 28406780), (2, 14203390), (4, 7101695), (5, 5681356), (10, 2840678), (20, 1420339), (227, 125140), (454, 62570), (908, 31285), (1135, 25028), (2270, 12514), (4540, 6257)]