20297207680

素因数分解:

$2^7\times 5^1\times {\mathrm{863}}^1\times {\mathrm{36749}}^1$

素因数の和:37631

約数の個数: 64

約数和(自身を含む): 48580560000

約数和(自身を除く): 28283352320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 863, 1726, 3452, 4315, 6904, 8630, 13808, 17260, 27616, 34520, 36749, 55232, 69040, 73498, 110464, 138080, 146996, 183745, 276160, 293992, 367490, 552320, 587984, 734980, 1175968, 1469960, 2351936, 2939920, 4703872, 5879840, 11759680, 23519360, 31714387, 63428774, 126857548, 158571935, 253715096, 317143870, 507430192, 634287740, 1014860384, 1268575480, 2029720768, 2537150960, 4059441536, 5074301920, 10148603840, 20297207680]

約数ペア:

[(1, 20297207680), (2, 10148603840), (4, 5074301920), (5, 4059441536), (8, 2537150960), (10, 2029720768), (16, 1268575480), (20, 1014860384), (32, 634287740), (40, 507430192), (64, 317143870), (80, 253715096), (128, 158571935), (160, 126857548), (320, 63428774), (640, 31714387), (863, 23519360), (1726, 11759680), (3452, 5879840), (4315, 4703872), (6904, 2939920), (8630, 2351936), (13808, 1469960), (17260, 1175968), (27616, 734980), (34520, 587984), (36749, 552320), (55232, 367490), (69040, 293992), (73498, 276160), (110464, 183745), (138080, 146996)]