20545954

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:263

約数の個数: 48

約数和(自身を含む): 38404800

約数和(自身を除く): 17858846

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 143, 199, 209, 247, 286, 361, 398, 418, 494, 722, 2189, 2587, 2717, 3781, 3971, 4378, 4693, 5174, 5434, 7562, 7942, 9386, 28457, 41591, 49153, 51623, 56914, 71839, 83182, 98306, 103246, 143678, 540683, 790229, 933907, 1081366, 1580458, 1867814, 10272977, 20545954]

約数ペア:

[(1, 20545954), (2, 10272977), (11, 1867814), (13, 1580458), (19, 1081366), (22, 933907), (26, 790229), (38, 540683), (143, 143678), (199, 103246), (209, 98306), (247, 83182), (286, 71839), (361, 56914), (398, 51623), (418, 49153), (494, 41591), (722, 28457), (2189, 9386), (2587, 7942), (2717, 7562), (3781, 5434), (3971, 5174), (4378, 4693)]