18699988

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 33352704

約数和(自身を除く): 14652716

約数列:

[1, 2, 4, 127, 131, 254, 262, 281, 508, 524, 562, 1124, 16637, 33274, 35687, 36811, 66548, 71374, 73622, 142748, 147244, 4674997, 9349994, 18699988]

約数ペア:

[(1, 18699988), (2, 9349994), (4, 4674997), (127, 147244), (131, 142748), (254, 73622), (262, 71374), (281, 66548), (508, 36811), (524, 35687), (562, 33274), (1124, 16637)]