81585620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4993}}^1$

素因数の和:5064

約数の個数: 48

約数和(自身を含む): 184578240

約数和(自身を除く): 102992620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 4085, 4993, 8170, 9986, 16340, 19972, 24965, 49930, 94867, 99860, 189734, 214699, 379468, 429398, 474335, 858796, 948670, 1073495, 1897340, 2146990, 4079281, 4293980, 8158562, 16317124, 20396405, 40792810, 81585620]

約数ペア:

[(1, 81585620), (2, 40792810), (4, 20396405), (5, 16317124), (10, 8158562), (19, 4293980), (20, 4079281), (38, 2146990), (43, 1897340), (76, 1073495), (86, 948670), (95, 858796), (172, 474335), (190, 429398), (215, 379468), (380, 214699), (430, 189734), (817, 99860), (860, 94867), (1634, 49930), (3268, 24965), (4085, 19972), (4993, 16340), (8170, 9986)]