28587321

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 49969920

約数和(自身を除く): 21382599

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 109, 161, 181, 207, 327, 483, 543, 763, 981, 1267, 1449, 1629, 2289, 2507, 3801, 4163, 6867, 7521, 11403, 12489, 17549, 19729, 22563, 29141, 37467, 52647, 59187, 87423, 138103, 157941, 177561, 262269, 414309, 453767, 1242927, 1361301, 3176369, 4083903, 9529107, 28587321]

約数ペア:

[(1, 28587321), (3, 9529107), (7, 4083903), (9, 3176369), (21, 1361301), (23, 1242927), (63, 453767), (69, 414309), (109, 262269), (161, 177561), (181, 157941), (207, 138103), (327, 87423), (483, 59187), (543, 52647), (763, 37467), (981, 29141), (1267, 22563), (1449, 19729), (1629, 17549), (2289, 12489), (2507, 11403), (3801, 7521), (4163, 6867)]