213887440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{205661}}^1$

素因数の和:205687

約数の個数: 40

約数和(自身を含む): 535543848

約数和(自身を除く): 321656408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 205661, 411322, 822644, 1028305, 1645288, 2056610, 2673593, 3290576, 4113220, 5347186, 8226440, 10694372, 13367965, 16452880, 21388744, 26735930, 42777488, 53471860, 106943720, 213887440]

約数ペア:

[(1, 213887440), (2, 106943720), (4, 53471860), (5, 42777488), (8, 26735930), (10, 21388744), (13, 16452880), (16, 13367965), (20, 10694372), (26, 8226440), (40, 5347186), (52, 4113220), (65, 3290576), (80, 2673593), (104, 2056610), (130, 1645288), (208, 1028305), (260, 822644), (520, 411322), (1040, 205661)]