278320887

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{16871}}^1$

素因数の和:16940

約数の個数: 32

約数和(自身を含む): 453519360

約数和(自身を除く): 175198473

約数列:

[1, 3, 9, 13, 27, 39, 47, 117, 141, 351, 423, 611, 1269, 1833, 5499, 16497, 16871, 50613, 151839, 219323, 455517, 657969, 792937, 1973907, 2378811, 5921721, 7136433, 10308181, 21409299, 30924543, 92773629, 278320887]

約数ペア:

[(1, 278320887), (3, 92773629), (9, 30924543), (13, 21409299), (27, 10308181), (39, 7136433), (47, 5921721), (117, 2378811), (141, 1973907), (351, 792937), (423, 657969), (611, 455517), (1269, 219323), (1833, 151839), (5499, 50613), (16497, 16871)]