28125968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{135221}}^1$

素因数の和:135242

約数の個数: 20

約数和(自身を含む): 58686348

約数和(自身を除く): 30560380

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 135221, 270442, 540884, 1081768, 1757873, 2163536, 3515746, 7031492, 14062984, 28125968]

約数ペア:

[(1, 28125968), (2, 14062984), (4, 7031492), (8, 3515746), (13, 2163536), (16, 1757873), (26, 1081768), (52, 540884), (104, 270442), (208, 135221)]