20674160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:322

約数の個数: 80

約数和(自身を含む): 52538304

約数和(自身を除く): 31864144

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 103, 104, 130, 193, 206, 208, 260, 386, 412, 515, 520, 772, 824, 965, 1030, 1040, 1339, 1544, 1648, 1930, 2060, 2509, 2678, 3088, 3860, 4120, 5018, 5356, 6695, 7720, 8240, 10036, 10712, 12545, 13390, 15440, 19879, 20072, 21424, 25090, 26780, 39758, 40144, 50180, 53560, 79516, 99395, 100360, 107120, 159032, 198790, 200720, 258427, 318064, 397580, 516854, 795160, 1033708, 1292135, 1590320, 2067416, 2584270, 4134832, 5168540, 10337080, 20674160]

約数ペア:

[(1, 20674160), (2, 10337080), (4, 5168540), (5, 4134832), (8, 2584270), (10, 2067416), (13, 1590320), (16, 1292135), (20, 1033708), (26, 795160), (40, 516854), (52, 397580), (65, 318064), (80, 258427), (103, 200720), (104, 198790), (130, 159032), (193, 107120), (206, 100360), (208, 99395), (260, 79516), (386, 53560), (412, 50180), (515, 40144), (520, 39758), (772, 26780), (824, 25090), (965, 21424), (1030, 20072), (1040, 19879), (1339, 15440), (1544, 13390), (1648, 12545), (1930, 10712), (2060, 10036), (2509, 8240), (2678, 7720), (3088, 6695), (3860, 5356), (4120, 5018)]