205280240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{479}}^1\times {\mathrm{487}}^1$

素因数の和:990

約数の個数: 80

約数和(自身を含む): 522823680

約数和(自身を除く): 317543440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 479, 487, 880, 958, 974, 1916, 1948, 2395, 2435, 3832, 3896, 4790, 4870, 5269, 5357, 7664, 7792, 9580, 9740, 10538, 10714, 19160, 19480, 21076, 21428, 26345, 26785, 38320, 38960, 42152, 42856, 52690, 53570, 84304, 85712, 105380, 107140, 210760, 214280, 233273, 421520, 428560, 466546, 933092, 1166365, 1866184, 2332730, 2566003, 3732368, 4665460, 5132006, 9330920, 10264012, 12830015, 18661840, 20528024, 25660030, 41056048, 51320060, 102640120, 205280240]

約数ペア:

[(1, 205280240), (2, 102640120), (4, 51320060), (5, 41056048), (8, 25660030), (10, 20528024), (11, 18661840), (16, 12830015), (20, 10264012), (22, 9330920), (40, 5132006), (44, 4665460), (55, 3732368), (80, 2566003), (88, 2332730), (110, 1866184), (176, 1166365), (220, 933092), (440, 466546), (479, 428560), (487, 421520), (880, 233273), (958, 214280), (974, 210760), (1916, 107140), (1948, 105380), (2395, 85712), (2435, 84304), (3832, 53570), (3896, 52690), (4790, 42856), (4870, 42152), (5269, 38960), (5357, 38320), (7664, 26785), (7792, 26345), (9580, 21428), (9740, 21076), (10538, 19480), (10714, 19160)]