27981668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 59766336

約数和(自身を除く): 31784668

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 71, 106, 142, 143, 169, 212, 284, 286, 338, 572, 583, 676, 689, 781, 923, 1166, 1378, 1562, 1846, 1859, 2332, 2756, 3124, 3692, 3718, 3763, 7436, 7526, 7579, 8957, 10153, 11999, 15052, 15158, 17914, 20306, 23998, 30316, 35828, 40612, 41393, 47996, 48919, 82786, 97838, 98527, 131989, 165572, 195676, 197054, 263978, 394108, 527956, 538109, 635947, 1076218, 1271894, 2152436, 2543788, 6995417, 13990834, 27981668]

約数ペア:

[(1, 27981668), (2, 13990834), (4, 6995417), (11, 2543788), (13, 2152436), (22, 1271894), (26, 1076218), (44, 635947), (52, 538109), (53, 527956), (71, 394108), (106, 263978), (142, 197054), (143, 195676), (169, 165572), (212, 131989), (284, 98527), (286, 97838), (338, 82786), (572, 48919), (583, 47996), (676, 41393), (689, 40612), (781, 35828), (923, 30316), (1166, 23998), (1378, 20306), (1562, 17914), (1846, 15158), (1859, 15052), (2332, 11999), (2756, 10153), (3124, 8957), (3692, 7579), (3718, 7526), (3763, 7436)]