21267878

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{1559}}^1$

素因数の和:1939

約数の個数: 16

約数和(自身を含む): 33696000

約数和(自身を除く): 12428122

約数列:

[1, 2, 19, 38, 359, 718, 1559, 3118, 6821, 13642, 29621, 59242, 559681, 1119362, 10633939, 21267878]

約数ペア:

[(1, 21267878), (2, 10633939), (19, 1119362), (38, 559681), (359, 59242), (718, 29621), (1559, 13642), (3118, 6821)]