20987824

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9173}}^1$

素因数の和:9205

約数の個数: 40

約数和(自身を含む): 47778192

約数和(自身を除く): 26790368

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 9173, 18346, 36692, 73384, 100903, 119249, 146768, 201806, 238498, 403612, 476996, 807224, 953992, 1311739, 1614448, 1907984, 2623478, 5246956, 10493912, 20987824]

約数ペア:

[(1, 20987824), (2, 10493912), (4, 5246956), (8, 2623478), (11, 1907984), (13, 1614448), (16, 1311739), (22, 953992), (26, 807224), (44, 476996), (52, 403612), (88, 238498), (104, 201806), (143, 146768), (176, 119249), (208, 100903), (286, 73384), (572, 36692), (1144, 18346), (2288, 9173)]