81103216

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{167}}^1\times {\mathrm{239}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 159989760

約数和(自身を除く): 78886544

約数列:

[1, 2, 4, 8, 16, 127, 167, 239, 254, 334, 478, 508, 668, 956, 1016, 1336, 1912, 2032, 2672, 3824, 21209, 30353, 39913, 42418, 60706, 79826, 84836, 121412, 159652, 169672, 242824, 319304, 339344, 485648, 638608, 5068951, 10137902, 20275804, 40551608, 81103216]

約数ペア:

[(1, 81103216), (2, 40551608), (4, 20275804), (8, 10137902), (16, 5068951), (127, 638608), (167, 485648), (239, 339344), (254, 319304), (334, 242824), (478, 169672), (508, 159652), (668, 121412), (956, 84836), (1016, 79826), (1336, 60706), (1912, 42418), (2032, 39913), (2672, 30353), (3824, 21209)]