20148759

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 32947200

約数和(自身を除く): 12798441

約数列:

[1, 3, 9, 19, 23, 47, 57, 69, 109, 141, 171, 207, 327, 423, 437, 893, 981, 1081, 1311, 2071, 2507, 2679, 3243, 3933, 5123, 6213, 7521, 8037, 9729, 15369, 18639, 20539, 22563, 46107, 47633, 61617, 97337, 117829, 142899, 184851, 292011, 353487, 428697, 876033, 1060461, 2238751, 6716253, 20148759]

約数ペア:

[(1, 20148759), (3, 6716253), (9, 2238751), (19, 1060461), (23, 876033), (47, 428697), (57, 353487), (69, 292011), (109, 184851), (141, 142899), (171, 117829), (207, 97337), (327, 61617), (423, 47633), (437, 46107), (893, 22563), (981, 20539), (1081, 18639), (1311, 15369), (2071, 9729), (2507, 8037), (2679, 7521), (3243, 6213), (3933, 5123)]