128542856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{6211}}^1$

素因数の和:6429

約数の個数: 32

約数和(自身を含む): 260904000

約数和(自身を除く): 132361144

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 796, 1592, 2587, 5174, 6211, 10348, 12422, 20696, 24844, 49688, 80743, 161486, 322972, 645944, 1235989, 2471978, 4943956, 9887912, 16067857, 32135714, 64271428, 128542856]

約数ペア:

[(1, 128542856), (2, 64271428), (4, 32135714), (8, 16067857), (13, 9887912), (26, 4943956), (52, 2471978), (104, 1235989), (199, 645944), (398, 322972), (796, 161486), (1592, 80743), (2587, 49688), (5174, 24844), (6211, 20696), (10348, 12422)]