66459920

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4217}}^1$

素因数の和:4427

約数の個数: 40

約数和(自身を含む): 155340504

約数和(自身を除く): 88880584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 4217, 7880, 8434, 15760, 16868, 21085, 33736, 42170, 67472, 84340, 168680, 337360, 830749, 1661498, 3322996, 4153745, 6645992, 8307490, 13291984, 16614980, 33229960, 66459920]

約数ペア:

[(1, 66459920), (2, 33229960), (4, 16614980), (5, 13291984), (8, 8307490), (10, 6645992), (16, 4153745), (20, 3322996), (40, 1661498), (80, 830749), (197, 337360), (394, 168680), (788, 84340), (985, 67472), (1576, 42170), (1970, 33736), (3152, 21085), (3940, 16868), (4217, 15760), (7880, 8434)]