20448142

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:169

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18742898

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 53, 71, 106, 142, 143, 209, 247, 286, 418, 494, 583, 689, 781, 923, 1007, 1166, 1349, 1378, 1562, 1846, 2014, 2698, 2717, 3763, 5434, 7526, 7579, 10153, 11077, 13091, 14839, 15158, 17537, 20306, 22154, 26182, 29678, 35074, 41393, 48919, 71497, 82786, 97838, 142994, 144001, 192907, 288002, 385814, 538109, 786467, 929461, 1076218, 1572934, 1858922, 10224071, 20448142]

約数ペア:

[(1, 20448142), (2, 10224071), (11, 1858922), (13, 1572934), (19, 1076218), (22, 929461), (26, 786467), (38, 538109), (53, 385814), (71, 288002), (106, 192907), (142, 144001), (143, 142994), (209, 97838), (247, 82786), (286, 71497), (418, 48919), (494, 41393), (583, 35074), (689, 29678), (781, 26182), (923, 22154), (1007, 20306), (1166, 17537), (1349, 15158), (1378, 14839), (1562, 13091), (1846, 11077), (2014, 10153), (2698, 7579), (2717, 7526), (3763, 5434)]