66838160

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4241}}^1$

素因数の和:4451

約数の個数: 40

約数和(自身を含む): 156224376

約数和(自身を除く): 89386216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 4241, 7880, 8482, 15760, 16964, 21205, 33928, 42410, 67856, 84820, 169640, 339280, 835477, 1670954, 3341908, 4177385, 6683816, 8354770, 13367632, 16709540, 33419080, 66838160]

約数ペア:

[(1, 66838160), (2, 33419080), (4, 16709540), (5, 13367632), (8, 8354770), (10, 6683816), (16, 4177385), (20, 3341908), (40, 1670954), (80, 835477), (197, 339280), (394, 169640), (788, 84820), (985, 67856), (1576, 42410), (1970, 33928), (3152, 21205), (3940, 16964), (4241, 15760), (7880, 8482)]