51661168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{248371}}^1$

素因数の和:248392

約数の個数: 20

約数和(自身を含む): 107793448

約数和(自身を除く): 56132280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 248371, 496742, 993484, 1986968, 3228823, 3973936, 6457646, 12915292, 25830584, 51661168]

約数ペア:

[(1, 51661168), (2, 25830584), (4, 12915292), (8, 6457646), (13, 3973936), (16, 3228823), (26, 1986968), (52, 993484), (104, 496742), (208, 248371)]