28157129

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1223}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 39481344

約数和(自身を除く): 11324215

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 1001, 1223, 1771, 2093, 3289, 8561, 13453, 15899, 23023, 28129, 94171, 111293, 174889, 196903, 309419, 365677, 1224223, 2165933, 2559739, 4022447, 28157129]

約数ペア:

[(1, 28157129), (7, 4022447), (11, 2559739), (13, 2165933), (23, 1224223), (77, 365677), (91, 309419), (143, 196903), (161, 174889), (253, 111293), (299, 94171), (1001, 28129), (1223, 23023), (1771, 15899), (2093, 13453), (3289, 8561)]