40881440

素因数分解:

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

素因数の和:1509

約数の個数: 48

約数和(自身を含む): 97147512

約数和(自身を除く): 56266072

約数列:

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

約数ペア:

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