66845168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{321371}}^1$

素因数の和:321392

約数の個数: 20

約数和(自身を含む): 139475448

約数和(自身を除く): 72630280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 321371, 642742, 1285484, 2570968, 4177823, 5141936, 8355646, 16711292, 33422584, 66845168]

約数ペア:

[(1, 66845168), (2, 33422584), (4, 16711292), (8, 8355646), (13, 5141936), (16, 4177823), (26, 2570968), (52, 1285484), (104, 642742), (208, 321371)]