20136040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 28334360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 509, 860, 920, 989, 1018, 1720, 1978, 2036, 2545, 3956, 4072, 4945, 5090, 7912, 9890, 10180, 11707, 19780, 20360, 21887, 23414, 39560, 43774, 46828, 58535, 87548, 93656, 109435, 117070, 175096, 218870, 234140, 437740, 468280, 503401, 875480, 1006802, 2013604, 2517005, 4027208, 5034010, 10068020, 20136040]

約数ペア:

[(1, 20136040), (2, 10068020), (4, 5034010), (5, 4027208), (8, 2517005), (10, 2013604), (20, 1006802), (23, 875480), (40, 503401), (43, 468280), (46, 437740), (86, 234140), (92, 218870), (115, 175096), (172, 117070), (184, 109435), (215, 93656), (230, 87548), (344, 58535), (430, 46828), (460, 43774), (509, 39560), (860, 23414), (920, 21887), (989, 20360), (1018, 19780), (1720, 11707), (1978, 10180), (2036, 9890), (2545, 7912), (3956, 5090), (4072, 4945)]