221335959

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 341376000

約数和(自身を除く): 120040041

約数列:

[1, 3, 13, 19, 39, 57, 79, 199, 237, 247, 361, 597, 741, 1027, 1083, 1501, 2587, 3081, 3781, 4503, 4693, 7761, 11343, 14079, 15721, 19513, 28519, 47163, 49153, 58539, 71839, 85557, 147459, 204373, 215517, 298699, 370747, 613119, 896097, 933907, 1112241, 2801721, 3883087, 5675281, 11649261, 17025843, 73778653, 221335959]

約数ペア:

[(1, 221335959), (3, 73778653), (13, 17025843), (19, 11649261), (39, 5675281), (57, 3883087), (79, 2801721), (199, 1112241), (237, 933907), (247, 896097), (361, 613119), (597, 370747), (741, 298699), (1027, 215517), (1083, 204373), (1501, 147459), (2587, 85557), (3081, 71839), (3781, 58539), (4503, 49153), (4693, 47163), (7761, 28519), (11343, 19513), (14079, 15721)]