31478218

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1\times {\mathrm{569}}^1$

素因数の和:909

約数の個数: 16

約数和(自身を含む): 47880000

約数和(自身を除く): 16401782

約数列:

[1, 2, 139, 199, 278, 398, 569, 1138, 27661, 55322, 79091, 113231, 158182, 226462, 15739109, 31478218]

約数ペア:

[(1, 31478218), (2, 15739109), (139, 226462), (199, 158182), (278, 113231), (398, 79091), (569, 55322), (1138, 27661)]