19955536

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 40693824

約数和(自身を除く): 20738288

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 211, 257, 368, 422, 514, 844, 1028, 1688, 2056, 3376, 4112, 4853, 5911, 9706, 11822, 19412, 23644, 38824, 47288, 54227, 77648, 94576, 108454, 216908, 433816, 867632, 1247221, 2494442, 4988884, 9977768, 19955536]

約数ペア:

[(1, 19955536), (2, 9977768), (4, 4988884), (8, 2494442), (16, 1247221), (23, 867632), (46, 433816), (92, 216908), (184, 108454), (211, 94576), (257, 77648), (368, 54227), (422, 47288), (514, 38824), (844, 23644), (1028, 19412), (1688, 11822), (2056, 9706), (3376, 5911), (4112, 4853)]