21368156979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1061}}^1\times {\mathrm{27179}}^1$

素因数の和:28275

約数の個数: 32

約数和(自身を含む): 32328979200

約数和(自身を除く): 10960822221

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 1061, 3183, 13793, 20159, 27179, 41379, 60477, 81537, 262067, 353327, 516401, 786201, 1059981, 1549203, 6713213, 20139639, 28836919, 86510757, 374879947, 547901461, 1124639841, 1643704383, 7122718993, 21368156979]

約数ペア:

[(1, 21368156979), (3, 7122718993), (13, 1643704383), (19, 1124639841), (39, 547901461), (57, 374879947), (247, 86510757), (741, 28836919), (1061, 20139639), (3183, 6713213), (13793, 1549203), (20159, 1059981), (27179, 786201), (41379, 516401), (60477, 353327), (81537, 262067)]