21703227

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 37269792

約数和(自身を除く): 15566565

約数列:

[1, 3, 7, 13, 21, 39, 41, 49, 91, 123, 147, 273, 277, 287, 533, 637, 831, 861, 1599, 1911, 1939, 2009, 3601, 3731, 5817, 6027, 10803, 11193, 11357, 13573, 25207, 26117, 34071, 40719, 75621, 78351, 79499, 147641, 176449, 238497, 442923, 529347, 556493, 1033487, 1669479, 3100461, 7234409, 21703227]

約数ペア:

[(1, 21703227), (3, 7234409), (7, 3100461), (13, 1669479), (21, 1033487), (39, 556493), (41, 529347), (49, 442923), (91, 238497), (123, 176449), (147, 147641), (273, 79499), (277, 78351), (287, 75621), (533, 40719), (637, 34071), (831, 26117), (861, 25207), (1599, 13573), (1911, 11357), (1939, 11193), (2009, 10803), (3601, 6027), (3731, 5817)]