77686240

素因数分解:

$2^5\times 5^1\times {\mathrm{487}}^1\times {\mathrm{997}}^1$

素因数の和:1499

約数の個数: 48

約数和(自身を含む): 184095072

約数和(自身を除く): 106408832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 487, 974, 997, 1948, 1994, 2435, 3896, 3988, 4870, 4985, 7792, 7976, 9740, 9970, 15584, 15952, 19480, 19940, 31904, 38960, 39880, 77920, 79760, 159520, 485539, 971078, 1942156, 2427695, 3884312, 4855390, 7768624, 9710780, 15537248, 19421560, 38843120, 77686240]

約数ペア:

[(1, 77686240), (2, 38843120), (4, 19421560), (5, 15537248), (8, 9710780), (10, 7768624), (16, 4855390), (20, 3884312), (32, 2427695), (40, 1942156), (80, 971078), (160, 485539), (487, 159520), (974, 79760), (997, 77920), (1948, 39880), (1994, 38960), (2435, 31904), (3896, 19940), (3988, 19480), (4870, 15952), (4985, 15584), (7792, 9970), (7976, 9740)]