28123888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{135211}}^1$

素因数の和:135232

約数の個数: 20

約数和(自身を含む): 58682008

約数和(自身を除く): 30558120

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 135211, 270422, 540844, 1081688, 1757743, 2163376, 3515486, 7030972, 14061944, 28123888]

約数ペア:

[(1, 28123888), (2, 14061944), (4, 7030972), (8, 3515486), (13, 2163376), (16, 1757743), (26, 1081688), (52, 540844), (104, 270422), (208, 135211)]