81762880

素因数分解:

$2^6\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1297}}^1$

素因数の和:1511

約数の個数: 56

約数和(自身を含む): 195837048

約数和(自身を除く): 114074168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 197, 320, 394, 788, 985, 1297, 1576, 1970, 2594, 3152, 3940, 5188, 6304, 6485, 7880, 10376, 12608, 12970, 15760, 20752, 25940, 31520, 41504, 51880, 63040, 83008, 103760, 207520, 255509, 415040, 511018, 1022036, 1277545, 2044072, 2555090, 4088144, 5110180, 8176288, 10220360, 16352576, 20440720, 40881440, 81762880]

約数ペア:

[(1, 81762880), (2, 40881440), (4, 20440720), (5, 16352576), (8, 10220360), (10, 8176288), (16, 5110180), (20, 4088144), (32, 2555090), (40, 2044072), (64, 1277545), (80, 1022036), (160, 511018), (197, 415040), (320, 255509), (394, 207520), (788, 103760), (985, 83008), (1297, 63040), (1576, 51880), (1970, 41504), (2594, 31520), (3152, 25940), (3940, 20752), (5188, 15760), (6304, 12970), (6485, 12608), (7880, 10376)]