208581681

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{128993}}^1$

素因数の和:129021

約数の個数: 24

約数和(自身を含む): 352927584

約数和(自身を除く): 144345903

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 128993, 386979, 902951, 1418923, 2708853, 4256769, 6320657, 9932461, 18961971, 29797383, 69527227, 208581681]

約数ペア:

[(1, 208581681), (3, 69527227), (7, 29797383), (11, 18961971), (21, 9932461), (33, 6320657), (49, 4256769), (77, 2708853), (147, 1418923), (231, 902951), (539, 386979), (1617, 128993)]