19903792

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{281}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 40912560

約数和(自身を除く): 21008768

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 233, 281, 304, 466, 562, 932, 1124, 1864, 2248, 3728, 4427, 4496, 5339, 8854, 10678, 17708, 21356, 35416, 42712, 65473, 70832, 85424, 130946, 261892, 523784, 1047568, 1243987, 2487974, 4975948, 9951896, 19903792]

約数ペア:

[(1, 19903792), (2, 9951896), (4, 4975948), (8, 2487974), (16, 1243987), (19, 1047568), (38, 523784), (76, 261892), (152, 130946), (233, 85424), (281, 70832), (304, 65473), (466, 42712), (562, 35416), (932, 21356), (1124, 17708), (1864, 10678), (2248, 8854), (3728, 5339), (4427, 4496)]