290499992

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{261241}}^1$

素因数の和:261386

約数の個数: 16

約数和(自身を含む): 548608200

約数和(自身を除く): 258108208

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 261241, 522482, 1044964, 2089928, 36312499, 72624998, 145249996, 290499992]

約数ペア:

[(1, 290499992), (2, 145249996), (4, 72624998), (8, 36312499), (139, 2089928), (278, 1044964), (556, 522482), (1112, 261241)]