28240810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1993}}^1$

素因数の和:2122

約数の個数: 32

約数和(自身を含む): 55273680

約数和(自身を除く): 27032870

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 218, 545, 1090, 1417, 1993, 2834, 3986, 7085, 9965, 14170, 19930, 25909, 51818, 129545, 217237, 259090, 434474, 1086185, 2172370, 2824081, 5648162, 14120405, 28240810]

約数ペア:

[(1, 28240810), (2, 14120405), (5, 5648162), (10, 2824081), (13, 2172370), (26, 1086185), (65, 434474), (109, 259090), (130, 217237), (218, 129545), (545, 51818), (1090, 25909), (1417, 19930), (1993, 14170), (2834, 9965), (3986, 7085)]