21229923

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 36578304

約数和(自身を除く): 15348381

約数列:

[1, 3, 11, 13, 17, 33, 39, 41, 51, 71, 123, 143, 187, 213, 221, 429, 451, 533, 561, 663, 697, 781, 923, 1207, 1353, 1599, 2091, 2343, 2431, 2769, 2911, 3621, 5863, 7293, 7667, 8733, 9061, 10153, 13277, 15691, 17589, 23001, 27183, 30459, 32021, 37843, 39831, 47073, 49487, 96063, 99671, 113529, 148461, 172601, 299013, 416273, 517803, 544357, 643331, 1248819, 1633071, 1929993, 7076641, 21229923]

約数ペア:

[(1, 21229923), (3, 7076641), (11, 1929993), (13, 1633071), (17, 1248819), (33, 643331), (39, 544357), (41, 517803), (51, 416273), (71, 299013), (123, 172601), (143, 148461), (187, 113529), (213, 99671), (221, 96063), (429, 49487), (451, 47073), (533, 39831), (561, 37843), (663, 32021), (697, 30459), (781, 27183), (923, 23001), (1207, 17589), (1353, 15691), (1599, 13277), (2091, 10153), (2343, 9061), (2431, 8733), (2769, 7667), (2911, 7293), (3621, 5863)]